Pregnancy and medical cost outcomes of a self-help prenatal smoking cessation program in a HMO

The results of a randomized clinical trial of a prenatal self-help smoking cessation program are reported in terms of the pregnancy and cost outcomes. The study population were the socioeconomically and ethnically diverse members of a large health maintenance organization (HMO) who reported that they were smoking at the time of their first prenatal visit. The intervention consisted predominantly of printed materials received through the mail. Compared with the usual care control group, women assigned to the self-help program were more likely to achieve cessation for the majority of their pregnancy (22.2 percent versus 8.6 percent), gave birth to infants weighing on average 57 grams more, and were 45 percent less likely to deliver a low birth weight infant. An economic evaluation of the self-help program was conducted from the perspective of the sponsoring HMO. Based upon the expenditures associated with the neonates' initial hospital episode, the intervention had a benefit-cost ratio of 2.8:1. These findings provide strong evidence to support widespread incorporation of smoking cessation interventions as a standard component of prenatal care.     

Evaluation of a smoking cessation intervention for pregnant women in an urban prenatal clinic

A smoking cessation and relapse prevention intervention was tested in an urban, prenatal clinic serving predominantly low-income, African-American women. At their first prenatal visit, 391 smokers were randomly assigned to an experimental (E) group to receive usual clinic information plus a prenatal and postpartum intervention or to a control (C) group to receive only usual clinic information. The intervention consisted of individual skills instruction and counseling by a peer health counselor on the use of a self-help cessation guide and routine clinic reinforcement. Among the E group (n = 193), 6.2% were cotinine-confirmed quitters at third trimester and among the C group (n = 198) the quit rate was 5.6%. Quitters were light smokers at entry into prenatal care. Many had tried to quit smoking at least once prior to pregnancy.     

The Kaiser Permanente prenatal smoking-cessation trial: when more isn't better, what is enough?

INTRODUCTION: The effectiveness of low-cost smoking interventions targeted to pregnant women has been demonstrated, although few gains in absolute cessation rates have been reported in the past decade. Under conditions of typical clinical practice, this study examined whether outcomes achieved with brief counseling from prenatal care providers and a self-help booklet could be improved by adding more resource-intensive cognitive-behavioral programs. DESIGN: Randomized Clinical Trial. SETTING: A large-group-model managed care organization. PARTICIPANTS: 390 English-speaking women 18 years of age or older who self-reported to be active smokers at their initial prenatal appointment. INTERVENTION: Participants were randomized to one of three groups: (1) a self-help booklet tailored to smoking patterns, stage of change, and lifestyle of pregnant smokers; (2) the booklet plus access to a computerized telephone cessation program based on interactive voice response technology; or (3) the booklet plus proactive telephone counseling from nurse educators using motivational interviewing techniques and strategies. No attempt was made to change smoking-related usual care advice from prenatal providers. MAIN OUTCOME MEASURE: Biochemically confirmed abstinence measured by level of cotinine in urine samples obtained during a routine prenatal visit at approximately the 34th week of pregnancy. RESULTS: Twenty percent of participants were confirmed as abstinent with no significant differences found between intervention groups. Multivariate baseline predictors of cessation included number of cigarettes smoked per day, confidence in ability to quit, exposure to passive smoke, and educational level. No differential intervention effects were found within strata of these predictors or by baseline stage of readiness to change. Cessation rates among heavier smokers were strikingly low in all intervention groups. CONCLUSION: Neither a computerized telephone cessation program nor systematic provision of motivational counseling improved cessation rates over a tailored self-help booklet delivered within the context of brief advice from prenatal providers. Innovative strategies need to be developed to increase the effectiveness of existing prenatal smoking interventions. Special attention should be paid to the needs of heavier smokers.     

The cost-effectiveness of three smoking cessation programs

This study analyzed the cost-effectiveness and distribution of costs by program stage of three smoking cessation programs: a smoking cessation class; an incentive-based quit smoking contest; and a self-help quit smoking kit. The self-help program had the lowest total cost, lowest per cent quit rate, lowest time requirement for participants, and was the most cost-effective. The most effective program, the smoking cessation class, required the most time from participants, had the highest total cost, and was the least cost-effective. The smoking contest was in-between the other two programs in total costs, per cent quit rate, and cost-effectiveness; it required the same time commitment from participants as the self-help program. These findings are interpreted within the context of community-based intervention in which the argument is made that cost-effectiveness is only one of several factors that should determine the selection of smoking cessation programs.     

Evaluation of antenatal smoking cessation programs for pregnant women

Abstract: Smoking during pregnancy has been linked to health problems, including the risk of low birthweight, preterm labour, spontaneous abortion and perinatal death. Two trials to investigate the efficacy of self-help materials were undertaken. During the first trial, a self-help booklet developed overseas was evaluated through a randomised controlled design to determine the effects of the booklet alone, compared with the booklet with midwife counselling for the women. We recruited 217 women into the study and followed them up at 20 weeks' gestation to ascertain smoking cessation and to measure process variables. Smoking cessation rates were lower than expected, and process measures indicated that materials were not being used. A second trial was commenced after a comprehensive review of the materials with focus groups of pregnant women and one-to-one interviews of nurses and doctors. Trial 2 was based new materials, and used a magazine-style (smoking cessation) booklet designed by the focus groups. A total of 119 women were randomly allocated into the new–materials group or a usual-care group. The materials were well received, relevant and pertinent, and were used by the women. Smoking cessation rates at 20 weeks' gestation were biochemically validated and indicated that 9 per cent in the intervention group and none in the usual-care group had stopped smoking. The use of overseas programs needs to be approached with caution. ( Aust N Z J Public Health 1998; 22: 55–9)     

The effectiveness of smoking cessation methods for smokers in public health maternity clinics: a randomized trial.

Little insight is available in the literature on how best to assist the pregnant smoker in public health maternity clinics to quit during pregnancy. A randomized pretest/posttest experiment was used to evaluate the effectiveness of two different self-help cessation methods. Three hundred and nine pregnant women from three public health maternity clinics were assigned randomly to one of three groups with one-third assigned to each: a control group; a group receiving the American Lung Association's Freedom From Smoking Manual; and those receiving A Pregnant Woman's Self-Help Guide to Quit Smoking. Using a saliva thiocyanate (SCN) and behavioral report at mid-pregnancy and end of pregnancy to confirm cessation or reduction, 2 per cent in the control group quit and 7 per cent reduced their SCN levels substantially. Of the women assigned to the ALA method, 6 per cent quit and 14 per cent reduced their SCN levels substantially. Of the women who used the Guide, 14 per cent quit and 17 per cent reduced their SCN levels substantially. Results of this trial indicate that health education methods tailored to the pregnant smoker are more effective in changing smoking behavior than the standard clinic information and advice to quit and/or the use of smoking cessation methods not tailored to the needs of the pregnant smoker.     

The prevalence of smoking among pregnant and postpartum women in Israel: a national survey and review

BACKGROUND: Cigarette smoking during pregnancy is a significant health risk to the developing fetus. In order to develop and implement an appropriate preconceptional and prenatal smoking cessation program a national pregnancy risk survey was done. METHODS: The survey was conducted through the Public Health Service's, Mother and Child Health Clinics (MCHC). The nursing staff initiated structured interviews with pregnant women and mothers of newborn infants. Questions included in the survey addressed folic acid utilization, smoking habits, onset of prenatal care and demographic characteristics. RESULTS: Overall, of the 1613 questionnaires received with smoking data, 12.8% of the women had smoked either in the 3 months preceding their current pregnancy and/or during their pregnancy. The smoking prevalence in Jewish women, was significantly greater then that found among Arab women (17.2 and 3.0%, P<.001, OR=7.5, CI=4.2-13.4). The prevalence of smoking for the duration of the pregnancy was 8.0% among Jewish women and 1.8% among Arab women. Among Jewish women, smoking prevalence was significantly associated with education, women who had completed 12 years of education were more likely to be nonsmokers (P=.034, OR=1.8, CI=1.0-3). CONCLUSION: Smoking in the preconceptional and prenatal period is a significant problem among Jewish women. Since less years of education is a significant risk factor, smoking cessation programs should focus on this subgroup of Jewish women.     

A randomized evaluation of smoking cessation interventions for pregnant women at a WIC clinic.

Pregnant smokers attending a local health department WIC clinic were randomly assigned to one of two self-help smoking cessation programs or usual care. The multiple component program resulted in larger quit rates than usual care during the last month of pregnancy (11 percent vs 3 percent) and postpartum (7 percent vs 0 percent). Achieving quit rates in WIC similar to those in studies conducted at prenatal care settings, suggests that smoking cessation programs for low-income pregnant WIC clients are feasible.     

Smoking patterns and use of cessation interventions during pregnancy

BACKGROUND: Pregnant smokers should be counseled to quit smoking and offered effective cessation interventions. To improve understanding of how best to increase smoking-cessation rates during pregnancy, this study analyzed population-based surveillance data to describe women's smoking patterns and the use of cessation services during pregnancy. METHODS: Data were analyzed from the 2004 and 2005 New Jersey Pregnancy Risk Assessment Monitoring System, a population-based survey of postpartum women (n=4473). Measures of behaviors included the timing of quit relative to the learning of pregnancy, provider assistance, the use of cessation interventions, and barriers to quitting. Analyses were done in 2007 and 2008. RESULTS: An estimated 16.2% (95% CI=15.1, 17.3) of women smoked before pregnancy. Of these, 49.8% quit before entering prenatal care, and 5.2% quit after entering prenatal care. Almost all women reported that their prenatal care provider asked if they smoked, but only 56.7% reported that a provider counseled them to quit smoking. Only 11.5% of women who smoked in late pregnancy used a cessation method, including self-help materials (6.3%); medications (3.9%); face-to-face counseling (1.7%); telephone-based counseling (1.5%); Internet-based counseling (1.3%); and a class or program (1.0%). The most frequently reported barriers to quitting were cravings for a cigarette, stress, and being around people who smoked. CONCLUSIONS: Nearly half of pregnant New Jersey smokers quit before prenatal care, and very few quit later. Few continuing smokers used a smoking-cessation method when trying to quit or cut back. Efforts should be intensified to increase the knowledge, promotion, and referral to effective interventions to help pregnant smokers quit.     

Smoking habits in early pregnancy and attitudes towards smoking cessation among pregnant women and their partners.

One-hundred and eighty-seven general practitioners in western Norway recorded smoking habits among 2379 women, consulting for their first regular medical check-up in pregnancy. Forty-six per cent had been daily smokers the last 3 months before pregnancy. Thirty-nine per cent were still smoking at the time of their first check-up. Sixteen per cent of the daily smokers stopped smoking spontaneously during the first few weeks of pregnancy. Fifty-seven per cent of women younger than 20 and 28% of women 30 years and older, did smoke at the first check-up. Single women smoked more often than women living with a partner (58% versus 38%). Smoking habits were not associated with number of previous pregnancies. At the first check-up, 530 pregnant women, still smoking daily, 18-34 years of age, living with a partner, accepted to participate in a smoking intervention study. They filled in a questionnaire about their smoking habits, the smoking habits of their partners and their attitudes towards smoking cessation. Sixty-five per cent reported a reduction in their use of cigarettes after becoming pregnant. The mean reduction in the number of cigarettes smoked daily was 4.0 (31%). Most of the respondents expressed a strong motivation to quit or reduce their smoking habits during their pregnancy. Seventy-two per cent of the partners were daily smokers. Reduction in the consumption of cigarettes, negative attitudes towards smoking and determination to stop smoking was significantly higher among women who were encouraged by their partners to stop smoking and in those who perceived that their partners were willing to reduce their consumption.     

WIC participation and pregnancy outcomes: Massachusetts Statewide Evaluation Project.

The effects of WIC prenatal participation were examined using data from the Massachusetts Birth and Death Registry. The birth outcomes of 4,126 pregnant women who participated in the WIC program and gave birth in 1978 were compared to those of 4,126 women individually matched on maternal age, race, parity, education, and marital status who did not participate in WIC. WIC prenatal participants are at greater demographic risk for poor pregnancy outcomes compare to all women in the same community. WIC participation is associated with improved pregnancy outcomes, including, a decrease in low birthweight (LBW) incidence (6.9 per cent vs 8.7 per cent) and neonatal mortality (12 vs 35 deaths), an increase in gestational age (40.0 vs 39.7 weeks), and a reduction in inadequate prenatal care (3.8 per cent vs 7.0 per cent). Stratification by demographic subpopulations indicates that subpopulations at higher risk (teenage, unmarried, and Hispanic origin women) have more enhanced pregnancy outcomes associated with WIC participation. Stratification by duration of participation indicates that increased participation is associated with enhanced pregnancy outcomes. While these findings suggest that birth outcome differences are a function of WIC participation, other factors which might distinguish between the two groups could also serve as the basis for alternative explanations.     

Integrating smoking cessation into routine public prenatal care: the Smoking Cessation in Pregnancy project.

OBJECTIVES. In 1986, the state health departments of Colorado, Maryland, and Missouri conducted a federally-funded demonstration project to increase smoking cessation among pregnant women receiving prenatal care and services from the Women, Infants, and Children (WIC) program in public clinics. METHODS. Low-intensity interventions were designed to be integrated into routine prenatal care. Clinics were randomly assigned to intervention or control status; pregnant smokers filled out questionnaires and gave urine specimens at enrollment, in the eighth month of pregnancy, and postpartum. Urine cotinine concentrations were determined at CDC by enzyme-linked immunosorbent assay and were used to verify self-reported smoking status. RESULTS. At the eighth month of pregnancy, self-reported quitting was higher for intervention clinics than control clinics in all three states. However, the cotinine-verified quit rates were not significantly different. CONCLUSIONS. Biochemical verification of self-reported quitting is essential to the evaluation of smoking cessation interventions. Achieving changes in smoking behavior in pregnant women with low-intensity interventions is difficult.     

Prenatal care and pregnancy outcomes during the recession: the Washington State experience.

To determine whether changes in prenatal care utilization and adverse pregnancy outcomes occurred among poor residents of Washington State during the recent recession, we examined all births occurring from 1980 to 1983 to women in the poorest census tracts of the three major metropolitan counties in Washington State (N = 15,735). A comparison sample consisted of all births occurring in the highest income census tracts (N = 16,295). Because the impact of the recession was hypothesized to be greatest in 1982, rates in 1982 were compared with rates in 1980. The proportion of births receiving late or no prenatal care increased in both the low-income tracts (6.2 per cent to 8.2 per cent) and the high-income tracts (1.6 per cent to 2.3 per cent). The proportion of low birthweight infants increased only in the low-income tracts (6.3 per cent to 7.4 per cent). The prevalence of maternal anemia (hematocrit less than 30) also increased only in the low-income tracts (0.7 per cent to 1.7 per cent). While we were unable to ascertain the financial status of the individuals who suffered the adverse outcomes, the findings for the low-income census tracts are consistent with the hypothesis that an increase in adverse pregnancy outcomes occurred among the poor in Washington State during the recent recession.     

Postpartum return to smoking: who is at risk and when

PURPOSE: Despite high rates of spontaneous and assisted smoking cessation during pregnancy, postpartum maintenance is disappointingly low. Predictors of return to smoking remain unclear, thus limiting the development of interventions that could protect the health of women and their children. This study followed women who had participated in a prenatal smoking cessation intervention trial and successfully stopped smoking to address two aims: (1) describe the probability of relapse in confirmed quitters during the first 6 months after the birth, and (2) identify factors that increase relapse. DESIGN: Prospective design during pregnancy and retrospective report at 6 months postpartum used survival analysis with return to smoking as the dependent variable and the Cox proportional hazards regression technique. MEASURES: Questionnaires were used at the first prenatal visit and telephone interviews at the 26th week of pregnancy and 6 months postpartum. Nonsmoking after the 20th week was measured by urine cotinine tests (m = 3); nonsmoking postpartum was measured by retrospective self-report. SETTING: The setting was an HMO-based group practice in Los Angeles. SUBJECTS: Subjects were white, black, and Hispanic women (n = 127) available for follow-up. RESULTS: The proportion of the sample classified as relapsers at 6 months postpartum was 62.9%. The final model identified the following risk factors for smoking: taking puffs in late pregnancy and having friends who smoke at the first prenatal visit, less confidence in mid-pregnancy that they could maintain nonsmoking postpartum, and a partner who smokes postpartum. CONCLUSIONS: Intervention should begin in late pregnancy, and smoking networks, including partner smoking, should be addressed.     

Behavioral, health, and cost outcomes of an HMO-based prenatal health education program

This report presents the results of an evaluation of a prenatal health education program conducted within a health maintenance organization (HMO) setting. Specifically, the behavioral, birth, and treatment-cost outcomes for 57 women in an experimental group who received individual nutrition counseling and a home-correspondence smoking cessation program were evaluated against the outcomes for 72 women in a control group who received standard prenatal care. In comparison with the controls, a greater percentage of women in the experimental group quit smoking during pregnancy (49.1 percent versus 37.5 percent). Of those who smoked throughout their pregnancy, women in the experimental group had a greater reduction in their mean rate of daily smoking. A significantly greater percentage of experimental group women adjusted their diets during the prenatal period (91 percent versus 68 percent), and particular success was achieved in increased consumption of dairy products and vegetables, decreased consumption of coffee, and adequate weight gain during pregnancy. Analysis of birth outcome data revealed that infants born to the experimental group had a significantly higher mean birth weight than infants born to the controls (121.34 oz versus 113.64 oz). The experimental group also had fewer low birth weight infants (7.0 percent versus 9.7 percent for controls). Hospital treatment cost savings associated with the reduced incidence of low birth weight infants among experimental group women yielded an overall benefit-cost ratio for the prenatal program of approximately 2:1.     

An Assessment of the Use and Impact of Ancillary Prenatal Care Services to Medicaid Women in Managed Care

Objectives: Managed care plans under Medicaid are becoming a usual source of care for low-income pregnant women. This study describes an ancillary prenatal care service intervention developed by one managed care organization (MCO) for Medicaid-enrolled women, assesses the extent to which the intervention services were used, and appraises the influence of the intervention on prenatal care participation. Method: There were 226 intervention and 258 control women with a single live birth delivered between 28 and 44 weeks gestation who (1) were enrolled in the MCO's Medicaid program, (2) were high-risk based on a prenatal risk assessment, and (3) started prenatal care prior to 26 weeks gestation. Less than adequate and intensive prenatal care utilization were chosen as intervention outcomes measures. Results: Family planning, a 2-month postpartum baby visit, a maternal postpartum visit, and a WIC (Special Supplemental Nutrition Program for Women, Infants, and Children) referral were among the most self-selected intervention services for this population; home health aide and breast-feeding support were the least requested services. Over 90% of those needing family planning or breast-feeding services received the services, while over 20% of the intervention group refused child care, food assistance and family violence referrals, and home health aide and smoking cessation services. The intervention group had a significantly lower risk of less than adequate utilization of prenatal care (OR = .32; 95% CI: 0.17–0.60) and was more likely to have an intensive number of prenatal care visits (OR = 1.61; 95% CI: 1.05–2.48). Conclusions: The ability of managed care organizations to provide ongoing prenatal care to Medicaid populations in a cost-effective manner depends partly on their development of packages of prenatal services that foster positive preventive health care utilization behaviors and good pregnancy outcomes. The results of this project suggest that the intervention was beneficial in the area of improving utilization of prenatal care.     

Maternal smoking cessation and relapse prevention during health care visits

BACKGROUND: Although effects of maternal smoking during pregnancy could be alleviated if women quit early in pregnancy, most do not. Relapse rates among quitters are high. OBJECTIVE: To test the effects of a low-intensity, smoking-cessation/relapse-prevention intervention delivered by clinic staff and providers and based on stages-of-change constructs of the transtheoretical model and brief motivational interviewing techniques. METHODS: A quasi-experimental prospective cohort design employed in obstetric, in-patient, and pediatric care delivery settings of a large health maintenance organization in Portland, Oregon. Subjects were pregnant smokers registered for their first prenatal visit. Primary outcome measures were sustained (self-reported) quit rates during pregnancy and smoking abstinence between 6 and 12 months after delivery. RESULTS: Regression analyses found statistically significant improvement for intervention women in sustained pregnancy quit rates (OR=2.7, CI=1. 2-5.7) and on smoking abstinence between 6 and 12 months after delivery (OR=2.4, CI=1.1-5.3). CONCLUSIONS: While these outcomes are based on self-report only, they emerged despite variable delivery of the intervention across clinics and represent clinically meaningful improvements in rates of nonsmoking. The intervention supports women who want to quit smoking during pregnancy and improves the likelihood of their remaining nonsmokers for the long term.     

Identifying Women at-Risk for Smoking Resumption after Pregnancy

While prevalence of smoking during pregnancy has declined over the past two decades, maintenance of cessation after pregnancy remains an important public health challenge, particularly for women of color. This article reports on methods for improving detection of women at risk for smoking resumption after pregnancy through the use of an evidence-based smoking assessment instrument. The instrument was adapted for use by lay health workers in a community-based maternal and infant health program. A total of 276 primarily low-income Black and Hispanic pregnant and postnatal women enrolled in the program were screened for tobacco use in an initial assessment. Of these, 190 were reassessed an average of 2.7 months later. Assessments included measures of current and past smoking and risk factors associated with relapse. Bivariate differences by smoking status were analyzed. Seventeen percent of participants who would be classified as non-smokers using less sensitive screening questions were identified as former smokers and at-risk for resuming smoking. Twenty-two percent of former smokers resumed smoking by reassessment. Smoking resumption among former smokers was associated with having a partner and household members who smoked. Identification of former smokers is critical in order to prevent resumption of smoking after pregnancy and promote long-term maternal smoking cessation. Brief assessment instruments administered at multiple points in time during the prenatal and postnatal periods are an effective means of improving detection of women at risk for smoking resumption. Former smokers should be included in prenatal and postnatal tobacco education and counseling services.     

Socioeconomic status and maternal cigarette smoking before, during and after a pregnancy

Abstract: Research suggests that cigarette use declines when women find out they are pregnant, increasing again after the birth. Pregnancy may provide many women with a substantial impetus to stopping smoking. Also, rates of smoking cessation and reduction may be class-related, with the highest socioeconomic-status groups manifesting higher rates of reduction. Using data from the Mater Hospital-University of Queensland Study of Pregnancy, we report family income related to rates of smoking before, during and after a pregnancy. Before becoming pregnant, 45.9 per cent of women in the sample were smokers. This declined to 34.7 per cent of women at their first clinic visit. Rates of heavy smoking (20 or more cigarettes per day) had returned to earlier levels by the six-month (after birth) follow-up. Women in the lowest family-income group had the highest rates of cigarette use before, during and after their pregnancy. Of the lowest family-income group, 8.4 per cent were heavy smokers before, during and after their pregnancy, compared with 2.8 per cent of women in the highest family-income group. Smoking cessation rates were highest in the highest family-income group (those who smoked least), but relapse rates after the birth were similar for all income groups. Arresting rates of smoking relapse by pregnant women should be seen as a major public health priority     

PrePare: a program of enhanced prenatal services within health-maintenance organization settings

This paper presents the conceptual framework and implementation strategies of a relationship-focused behavioral intervention for pregnant women and their families. The program, PrePare ('Prenatal Parenting'), was designed as a prenatal precursor to the pediatric health care model, Healthy Steps. PrePare includes preventive intervention elements that address parents' universal concerns about pregnancy and parenthood, as well as specific activities to support optimum pregnancy health and reduce high-risk behaviors. As described here, the program is embedded within a large not-for-profit health-maintenance organization (HMO). Delivery of the prenatal component is carried out by Healthy Steps interventionists through three home visits and telephone follow-up during mothers' second and third trimesters of pregnancy. An evaluation of program outcomes is underway. The design compares three groups of families, those who receive PrePare followed by Healthy Steps, Healthy Steps alone and a usual HMO-practice comparison. It is hypothesized that initiating expanded services during the prenatal period will lead to increases in reported patient satisfaction, provider satisfaction and organizational efficiency within the health care delivery system.