Trends in cigarette smoking in the United States. Educational differences are increasing

National trends in smoking prevalence by educational category from 1974 through 1985 show that education has replaced gender as the major sociodemographic predictor of smoking status. Smoking prevalence has declined across all educational groups but the decline has occurred five times faster among the higher educated compared with the less educated. From 1974 to 1985, smoking prevalence among persons with less than a high school diploma declined to 34.2% (0.19 percentage points per year) whereas prevalence for persons with four years or more of college education declined to 18.4% (0.91 percentage points per year). Smoking cessation activity increased across all educational groups, but the rate of increase among the higher educated was twice that of lower-educated groups. Initiation of smoking among more-educated men decreased rapidly to 15% in 1985 but leveled off by 1987. Until 1985, less-educated young females were the only group in which smoking initiation was increasing. However, in 1987 a sudden and large decline in initiation among less-educated females occurred. The apparent recent changes in initiation patterns by educational level suggest that the converging of smoking prevalence between the genders may not continue. The large and widening educational gap in smoking suggests that health promotion priorities need to be reassessed.     

Trends in cigarette smoking in the United States. The changing influence of gender and race

Trends in the prevalence, initiation, and cessation of cigarette smoking are reported for the US population using weighted and age-standardized data from seven National Health Interview Surveys (1974 to 1985). The decline in prevalence was linear, with the prevalence for men decreasing at 0.91 percentage points per year to 33.5% in 1985 and the prevalence for women decreasing at 0.33 percentage points per year to 27.6% in 1985. For whites the rate of decline (percentage points per year) was 0.57, to 29.4% in 1985, and for blacks the decline was 0.67, to 35.6% in 1985. Smoking cessation increased among all gender-race groups from 1974 to 1985, with the yearly rate of increase (in percentage points per year) about equivalent for blacks (0.75) and whites (0.77), while it was higher in women (0.90) than in men (0.67). Smoking initiation decreased among young men (-1.03), while it remained about the same in young women (+0.11). Initiation decreased at a more rapid rate in blacks (-1.02) than in whites (-0.35). We conclude that smoking prevalence is decreasing across all race-gender groups, although at a slower rate for women than men, and that differences in initiation, more than cessation, are primarily responsible for the converging of smoking prevalence rates among men and women.     

Smoking and health implications of a change in the federal cigarette excise tax

Cigarette excise tax changes ultimately influence the health of smokers and potential smokers. An 8-cent decrease in the federal tax is estimated to induce up to 1 million young persons, ages 12 to 25 years, to smoke, when without the tax decrease they would not. Hundreds of thousands of Americans older than 25 years would also start or continue smoking as a result of the tax decrease. Conversely, an 8- to 16-cent tax increase would encourage from 1 to 2 million young persons and 800,000 to 1.5 million adults to quit smoking or not to start. Thus, a tax increase could prevent hundreds of thousands of premature smoking-related deaths, while a tax decrease would contribute to the disease burden of tobacco. Intentionally or inadvertently, the federal cigarette excise tax is a powerful tool of public health policy.     

Is the smoking decision an 'informed choice'? Effect of smoking risk factors on smoking beliefs

The argument that people freely choose to smoke assumes that individuals at the point of initiation of smoking (often in adolescence) hold accurate beliefs about smoking. Smoking beliefs and the presence of known smoking risk factors were assessed in interviews with a sample of 895 urban young people. The respondents greatly overestimated the prevalence of adult and peer smoking, negative attitudes of their peers were greatly underestimated, a large proportion believed that they would be less likely than other people to contract a smoking-related illness if they became smokers, and there was a general lack of understanding of the adverse consequences experienced upon smoking cessation. These misperceptions were more common among youngsters who were smokers, who intended to smoke, or who had friends or family members who smoked. Because misinformation among young people is widespread and those at greatest risk for smoking are the most misinformed, the tobacco industry's argument that the decision to smoke reflects an "informed choice" is without merit.     

云南省纳西族居民烟草暴露相关慢性阻塞性肺疾病的经济负担研究

背景　慢性阻塞性肺疾病（COPD）现已成为一个重要的公共卫生问题,其患病率较高,治疗费用高昂,因COPD带来的疾病经济负担较重。目的　对云南省纳西族居民归因于吸烟和被动吸烟的COPD经济负担进行分析。方法　于2018年7-8月,运用多阶段分层随机抽样的方法,在云南省丽江市玉龙纳西族自治县抽取年龄≥35岁的纳西族居民进行问卷调查及肺功能检查。测算人均直接疾病经济负担、人均间接疾病经济负担、COPD患者的总经济负担、归因于吸烟/被动吸烟的经济负担。结果　共发放问卷2 600份,回收有效问卷2 531份,有效回收率为97.35%。云南省纳西族居民COPD的患病率为17.66%,吸烟率为40.58%,被动吸烟率为38.29%;其中男性吸烟率高于女性（P<0.001）;女性被动吸烟率高于男性（P<0.001）。吸烟者〔OR=1.903,95%CI（1.507,2.404）〕和被动吸烟者〔OR=2.195,95%CI（1.718,2.805）〕患COPD的可能性高于非吸烟者和非被动吸烟者。云南省纳西族COPD患者的人均直接疾病经济负担、间接疾病经济负担和疾病经济负担分别为2 827.82元、105.00元和2 932.82元,总疾病经济负担为6 407万元;其中归因于吸烟、被动吸烟的经济负担分别为1 718万元、2 011万元;男性归因于被动吸烟的经济负担低于吸烟,而女性则相反。结论　吸烟和被动吸烟给当地带来了沉重的疾病经济负担。加大控烟力度、降低吸烟率和被动吸烟率,有助于减轻COPD的经济负担。     

Comparing the prevalence of smoking in pregnant and nonpregnant women, 1985 to 1986

The 1990 health objectives for the nation state that pregnant women should be only half as likely to smoke as nonpregnant women. To assess progress toward meeting this objective, we used cross-sectional data from the 26 states in the Behavioral Risk Factor Surveillance System in 1985 and 1986. We compared the prevalence of self-reported smoking among pregnant (N = 836) and nonpregnant (N = 18,025) women aged 18 to 45 years. Overall, pregnant women were 70% as likely to be current smokers as nonpregnant women (prevalence ratio, 0.7; 95% confidence interval, 0.6 to 0.8), while blacks showed the largest pregnancy-associated reduction in the prevalence of smoking (prevalence ratio, 0.5; 95% confidence interval, 0.3 to 0.9). Most of the difference in smoking prevalence occurred not because pregnant women were less likely to have ever smoked, but because pregnant women were more likely to have quit smoking than nonpregnant women. However, unmarried pregnant white women were 40% more likely to smoke than their nonpregnant counterparts (prevalence ratio, 1.4; 95% confidence interval, 1.1 to 1.7). We conclude from this analysis that the 1990 health objective for smoking among pregnant women is unlikely to be achieved. Clinicians providing care to pregnant women need to pay increased attention to smoking cessation.     

Smoking in the elderly--it's never too late to quit

Approximately 3.5 million persons aged 65 years and older smoke cigarettes in the United States--10.9% of this age group in Oklahoma smokes. Up to half of all smokers will experience death or disability related to smoking. Cigarette smoking has been clearly linked to the most common causes of death in the elderly and contributes to the morbidity and disability associated with many chronic illnesses that are common in this age group. The health benefits of smoking cessation in the elderly have been clearly demonstrated. Although there are barriers to smoking cessation that are specific to the older age group, interventions to promote quitting that are successful in younger smokers have been found to be effective in elderly smokers. The extended longevity and quality of life in this country for persons who achieve old age highlights the need for aggressive practices related to smoking cessation in the elderly.     

Predictors of physician's smoking cessation advice

OBJECTIVES--To determine the percentage of smokers reporting that a physician had ever advised them to smoke less or to stop smoking, and the effect of time, demographics, medical history, and cigarette dependence on the likelihood that respondents would state that a physician had ever advised them to stop smoking. DESIGN AND SETTING--Data were collected from the Stanford Five-City Project, a communitywide health education intervention program. The two treatment and three control cities were located in northern and central California. As there was no significant difference between treatment and control cities regarding cessation advice, data were pooled for these analyses. PARTICIPANTS--There were five cross-sectional, population-based Five-City Project surveys (conducted in 1979-1980, 1981-1982, 1983-1984, 1985-1986, and 1989-1990); these surveys randomly sampled households and included all residents aged 12 to 74 years. MAIN OUTCOME MEASURES--Improved smoking advice rates over time in all towns was an a priori hypothesis. RESULTS--Of the 2710 current smokers, 48.8% stated that their physicians had ever advised them to smoke less or stop smoking. Respondents were more likely to have been so advised if they smoked more cigarettes per day, were surveyed later in the decade, had more office visits in the last year, or were older. In 1979-1980, 44.1% of smokers stated that they had ever been advised to smoke less or to quit by a physician, vs 49.8% of smokers in 1989-1990 (P less than .07). Only 3.6% of 1672 ex-smokers stated that their physicians had helped them to quit. CONCLUSION--These findings suggest that physicians still need to increase smoking cessation counseling to all patients, particularly adolescents and other young smokers, minorities, and those without cigarette-related disease.     

The profile of the African smoker: the Ghana smoking studies

The prevalence of cigarette smoking in Ghana was assessed by examining the data on smoking from 2 World Health Organization sponsored studies of blood pressure and cardiovascular disease. The 2 studies were the Civil Servants Hypertension Project, which surveyed a sample of approximately 20% of all civil servants and included 486 male and 202 female respondents, and the Mamprobi Survey, which sampled the general population and included 3745 respondents, aged 14-64 years. Additional data from 2 other studies was also examined. Overall, the studies found that the proportion of smokers in Ghana was small and that most of those who smoked were not heavy smokers. The smoking prevalence rate among civil servants was 32% for males and 5.9% for females. Among the respondents in the Mamprobi Survey, the respective rates were 24% and 0.8%. For those aged 15-19 years, the prevalence rates in the 2 studies ranged from 4.6%-7.8% for males and was 0.0% for females. In another recent study of 2493 respondents from the general population, the proportion of smokers was only 15.1%. The proportion of smokers was similar among those who earned low and high salaries. In the Civil Servants Study the mean number of cigaretters smoked/day among the civil servants was 7 for the males and 4.7 for the females. In the Mamprobi Survey, the respective mean numbers were 8.4 and 3.0. Among civil servants, professional and administratie personnel smoked an average of 12 cigarettes/day while lower salaried workers smoked an average of 7 cigarettes/day. Only 3.7% of all the smokers in the 2 studies combined smoked 20 or more cigarettes/day. All of the studies indicate that 97%-99% of those who smoked/used cigarettes. Among civil servants, 91% of the smokers and 60% of the nonsmokers used alcohol. The studies indicate that the typical smoker in Ghana is an urban male, between 20-29 years of age, who began smoking as an adolescent. He is just as likely to belong to a high income group as a low income group; however, if he belongs to the former group, he is more likely to smoke more than the average number of cigarettes/day. Available information on smoking should be used to launch a public health campaign to reduce smoking in Ghana. At the present time, only a minority of the population smokes, few individuals are heavy smokers, and teachers and educators are showing considerable interest in combating smoking. Currently, educated and professional groups have a relatively high proportion of smokers. If these groups can be motivated to stop smoking, they might serve as effective role models for other segments of the population. Factors which may increase the smoking problem in Ghana are the growing number of young people who smoke and the ambivalence of the government toward smoking. Voluntary organizations and health professionals should assume more active roles in educating the public about the hazards of smoking.     

Trends in pregnancy-related smoking rates in the United States, 1987-1996

CONTEXT: Rates of smoking are increasing among adolescents and young adults, but trends in smoking among pregnant women have not been studied. OBJECTIVE: To assess pregnancy-related variations in smoking behaviors and their determinants among women of childbearing age in the United States. DESIGN: Analysis of data collected between 1987-1996 from the Behavioral Risk Factor Surveillance System survey. SETTING AND SUBJECTS: A total of 187302 (178499 nonpregnant and 8803 pregnant) noninstitutionalized women aged 18 to 44 years from 33 states. MAIN OUTCOME MEASURES: Prevalence rates of smoking initiation and current smoking, median number of cigarettes smoked, and adjusted odds ratios for smoking stratified by pregnancy status; prevalence rate ratio for current smoking comparing pregnant with nonpregnant women. RESULTS: The overall percentage of women who had ever initiated smoking decreased significantly from 44.1% in 1987 to 38.2% in 1996. During that 10-year period, the prevalence of current smoking also decreased significantly among both pregnant women (16.3% to 11.8%) and nonpregnant women (26.7% to 23.6%). Overall, pregnant women were about half (54%) as likely as nonpregnant women to be current smokers during 1987-1996. Over time, the median number of cigarettes smoked per day by pregnant smokers remained at 10, whereas among nonpregnant smokers it decreased from 19 to 15 (P<.05 for trend). In the same period, among young women (aged 18-20 years), prevalence rates of smoking initiation and current smoking increased slightly. Sociodemographic subgroups of women at increased risk for current smoking were the same for pregnant and nonpregnant women (ie, those with a completed high school education or less, whites, and those who were unmarried). CONCLUSIONS: In this analysis, the decline in smoking over time among pregnant women was primarily due to the overall decline in smoking initiation rates among women of childbearing age, not to an increased rate of smoking cessation related to pregnancy. To foster effective perinatal tobacco control, efforts are needed to further reduce the number of young women who begin smoking. Clinicians should query all pregnant women and women of childbearing age about smoking and provide cessation and relapse interventions to each smoker.     

Smoking in China: findings of the 1996 National Prevalence Survey.

CONTEXT: As the world's largest producer and consumer of tobacco products, China bears a large proportion of the global burden of smoking-related disease and may be experiencing a tobacco epidemic. OBJECTIVE: To develop an evidence-based approach supporting tobacco control initiatives in China. DESIGN AND SETTING: A population-based survey consisting of a 52-item questionnaire that included information on demographics, smoking history, smoking-related knowledge and attitudes, cessation, passive smoke exposure, and health status was administered in 145 disease surveillance points in the 30 provinces of China from March through July 1996. PARTICIPANTS: A nationally representative random sample of 128766 persons aged 15 to 69 years were asked to participate; 120298 (93.8%) provided data and were included in the final analysis. About two thirds of those sampled were from rural areas and one third were from urban areas. MAIN OUTCOME MEASURES: Current smoking patterns and attitudes; changes in smoking patterns and attitudes compared with results of a previous national survey conducted in 1984. RESULTS: A total of 41187 respondents smoked at least 1 cigarette per day, accounting for 34.1% of the total number of respondents, an increase of 3.4 percentage points since 1984. Current smoking continues to be prevalent among more men (63%) than women (3.8%). Age at smoking initiation declined by about 3 years for both men and women (from 28 to 25 years). Only a minority of smokers recognized that lung cancer (36%) and heart disease (4%) can be caused by smoking. Of the nonsmokers, 53.5% were exposed to environmental tobacco smoke at least 15 minutes per day on more than 1 day per week. Respondents were generally supportive of tobacco control measures. CONCLUSION: The high rates of smoking in men found in this study signal an urgent need for smoking prevention and cessation efforts; tobacco control initiatives are needed to maintain or decrease the currently low smoking prevalence in women.     

Australian patterns of tobacco smoking in 1986

A total of 9440 Australian men and women of over 15 years of age was interviewed at home in 1986 to determine the prevalence and consumption levels of tobacco products. Current smokers were defined as those who smoked any combination of cigarettes, cigars or pipes regularly. The percentage of current smokers among men was 32.9% and among women was 28.5%, and the peak prevalence of smoking was in the age-group 20-24 years for both men (40.5%) and women (40.8%). Among men, 27.7% were past smokers, and among women, 16.5% were past smokers. The proportion of past smokers among those who had ever smoked was higher in men (0.46) than among women (0.37), but in the younger age groups there was no relative excess among men. Male smokers consumed more cigarettes per day than did female smokers and men were exposed to a higher daily average amount of cigarette tar. Sociodemographic variables that were associated with smoking in both men and women included age and educational and occupational level. Asian-born persons had a significantly lower prevalence of smoking than did persons who were born in Australia.     

Cigarette smoking among school children in Singapore. Part II--Development of the smoking habit

The second in this series on smoking among school children in Singapore aims to define the characteristics of young smokers. Results show that of respondents who had ever smoked, the median age of experimentation with smoking was 12 years. This was seen among boys as well as girls. The median age at which current smokers went on to smoke regularly was 14 years, approximately two years after trying their first cigarette. Friends and parents were the main sources of the first cigarette for all categories of smokers, whether they be ex smokers, experimenters or current smokers. Among the reasons as to why current smokers smoked, the leading two were "to relax" (46.4%) and "out of sheer curiosity" (22.3%). Boys tend more to smoke with friends of the same sex (40.6%) whilst girls preferred mixed company (45.5%) when they smoked. Fathers played a major role in the development and continuation of smoking among those who had ever smoked before--52.0% of boys and 51.6% of girls currently smoking reported that their fathers smoked as well.     

南昌市居民吸烟现状及影响因素分析

了解南昌市社区居民的吸烟现状,分析影响吸烟的因素,为制定控烟干预措施提供依据。方法采用单纯随机抽样方法,随机抽取南昌市15岁及以上常住居民956例,调查其吸烟现状,采用Logistic回归分析对吸烟的影响因素进行分析。结果调查对象的平均年龄为(33.22±13.23)岁,其中男性562人占58.8%,年人均家庭经济收入以1～2万为主占34.1%。吸烟率为37.97%,吸烟者平均年龄为(38.18±13.58)岁,平均吸烟(11.97±9.12)支.d-1,80.9%的吸烟者意识到烟雾会危害他人的健康。影响吸烟的因素包括:性别(β=-2.241,P=0.000)、介意周围人吸烟(β=1.753,P=0.000)、家中对吸烟的限制(β=-0.358,P=0.000)、单位内吸烟情况(β=0.287,P=0.000)。结论调查对象男性较多,吸烟率较高,室内吸烟者较多,家庭与单位的控烟环境较为宽松;多数公共场所虽然有禁烟标识,但在公共场所吸烟者仍有相当高的比例,香烟广告或变相广告仍然充满了社会环境,吸烟影响因素多,提高居民的文化素质、营造无烟的环境对于降低吸烟具有十分重要的意义。     

Deaths in Canada from lung cancer due to involuntary smoking.

Recently published evidence indicates that involuntary smoking causes an increased risk of lung cancer among nonsmokers. Information was compiled on the proportion of people who had never smoked among victims of lung cancer, the risk of lung cancer for nonsmokers married to smokers and the prevalence of such exposure. On the basis of these data we estimate that 50 to 60 of the deaths from lung cancer in Canada in 1985 among people who had never smoked were caused by spousal smoking; about 90% occurred in women. The total number of deaths from lung cancer attributable to exposure to tobacco smoke from spouses and other sources (mainly the workplace) was derived by applying estimated age- and sex-specific rates of death from lung cancer attributable to such exposure to the population of Canadians who have never smoked; about 330 deaths from lung cancer annually are attributable to such exposure.     

Tobacco smoking prevalence among a cross-section of dentists in Queensland, Australia

The purpose of this study was to investigate the epidemiology of tobacco smoking among dentists in Queensland, Australia. We utilized an anonymous, self-reporting questionnaire which was posted to 400 dentists during 2004. The overall response rate was 72.1%, among whom the prevalence of current smoking was estimated to be 3.9% (95%CI: 2.2-6.9), with a further 11.0% being ex-smokers (95%CI: 7.9-15.2). Smoking rates varied by age, with 6.1% of dentists aged younger than 30 years who were smokers. The lowest smoking prevalence was seen among dentists aged between 30 and 40 years (1.4%), and the highest among those aged over 60 years (7.1%). Regarding weekly work hours, the highest smoking prevalence was seen among dentists who worked between 25 and 35 hrs per week (6.8%). Ex-smokers were more likely to work less than 25 hrs per week (21.7%). Smoking rates also varied by career length, with the lowest prevalence among dentists who had worked 10 to 20 years (1.3%) and the highest rate among those who had worked over 40 years (6.7%). A similar trend was revealed for ex-smokers, with prevalence rates of 1.7% and 33.3%, respectively. Overall, our study suggests that the prevalence of smoking is rather low among Queensland dentists. As the distribution of smoking was not uniform however, future preventive measures will need to consider the individual situation of dentists who smoke, particularly those in the older age groups.     

The status of tobacco use and knowledge, and attitudes relating to smoking among female students in a Bengbu medical school

Objective: To learn the status of tobacco use, and the knowledge, attitudes, and behaviors among female students in Bengbu Medical College. Methods: In a cross-sectional survey, questionnaires were completed by 634 female students in the medical college in 2007,including the prevalence of current smoking, their knowledge of the effects of tobacco use on health, and attitudes towards the smoking behaviors of young women. Results: Only 6.9% of female medical students were former smokers, and 4.9% of them were current smokers. There was no significant difference in the current smoking rate among the students from each department surveyed. Female students from urban areas were more likely to be current or attempted smokers than those from rural areas. The proportion of the students who were aware of the health risks of smoking was less than 45%. The students from the Department of Nursing had more knowledge regarding the harmful health effects of smoking than those from the other departments. There was no significant difference in attitudes towards the smoking behaviors of young women among the students from each department. Compared with female students from rural areas, the female students from urban areas were significantly more likely to think that a young woman who smoked was cool, mature and charming. Conclusion: The smoking prevalence of the female students in Bengbu Medical College is high. They are not aware of the smoking related risks and have erroneous beliefs and perceptions about female smoking behaviors.     

西安市居民吸烟行为流行病学分析

目的　了解西安市居民的吸烟现状 .方法　随机抽取 10 0 0名 15～ 6 9岁居民进行入户调查 .结果　西安市居民吸烟率为 32 .2 % (男 6 4.2 % ,女 1.8% ) ,平均开始吸烟年龄为2 2 .5岁 ,日平均吸烟量为 12 .8支 ,且开始吸烟年龄越早 ,吸烟量越大 ,尝试、社交需要和解乏是主要的吸烟原因 ,吸烟者的戒烟率为 9.0 3% .分析发现 ,性别、职业、文化程度及家庭成员吸烟均与居民的吸烟行为有关 .结论　吸烟在西安市仍然是一个严重的公共卫生问题 ,控烟应从全社会抓起 ,以青少年作为宣传教育的重点 ,加强控烟力度     

Prevalence of diagnosed atrial fibrillation in adults: national implications for rhythm management and stroke prevention: the AnTicoagulation and Risk Factors in Atrial Fibrillation (ATRIA) Study

CONTEXT: Atrial fibrillation is the most common arrhythmia in elderly persons and a potent risk factor for stroke. However, recent prevalence and projected future numbers of persons with atrial fibrillation are not well described. OBJECTIVE: To estimate prevalence of atrial fibrillation and US national projections of the numbers of persons with atrial fibrillation through the year 2050. DESIGN, SETTING, AND PATIENTS: Cross-sectional study of adults aged 20 years or older who were enrolled in a large health maintenance organization in California and who had atrial fibrillation diagnosed between July 1, 1996, and December 31, 1997. MAIN OUTCOME MEASURES: Prevalence of atrial fibrillation in the study population of 1.89 million; projected number of persons in the United States with atrial fibrillation between 1995-2050. RESULTS: A total of 17 974 adults with diagnosed atrial fibrillation were identified during the study period; 45% were aged 75 years or older. The prevalence of atrial fibrillation was 0.95% (95% confidence interval, 0.94%-0.96%). Atrial fibrillation was more common in men than in women (1.1% vs 0.8%; P<.001). Prevalence increased from 0.1% among adults younger than 55 years to 9.0% in persons aged 80 years or older. Among persons aged 50 years or older, prevalence of atrial fibrillation was higher in whites than in blacks (2.2% vs 1.5%; P<.001). We estimate approximately 2.3 million US adults currently have atrial fibrillation. We project that this will increase to more than 5.6 million (lower bound, 5.0; upper bound, 6.3) by the year 2050, with more than 50% of affected individuals aged 80 years or older. CONCLUSIONS: Our study confirms that atrial fibrillation is common among older adults and provides a contemporary basis for estimates of prevalence in the United States. The number of patients with atrial fibrillation is likely to increase 2.5-fold during the next 50 years, reflecting the growing proportion of elderly individuals. Coordinated efforts are needed to face the increasing challenge of optimal stroke prevention and rhythm management in patients with atrial fibrillation.