Children with cancer: The pain experience away from the health care setting

Relatively little is known about the nature of pain in children with cancer away from the health care setting. Accordingly, this pilot study focused on the pain experience in this group. A purposive sample of 20 children, ages 4 through 16 years, with any type of cancer, was obtained. A semistructured interview including the Poker Chip Tool and Preschool Body Outline (ages 4 to 7 years) or the Adolescent Pediatric Pain Tool (age 8 to 16 years) was administered to all the children once during a clinic appointment. Supplemental parental input was sought during the interview. Two of the children also were contacted every 2 weeks for 3 months. Content analysis indicated that the children experienced pain in a number of locations, most frequently the “stomach,” joints, legs, and back. Pain intensity varied widely. The source of pain identified most often was chemotherapy. The most common pain management strategies mentioned were rest/sleep, analgesics, rubbing, distraction, social support, and heat. Clearly, children with cancer away from the health care setting do have pain. Assessment of pain in children with cancer regardless of setting is a necessity.     

Development and validation of the Asian version of the oucher: a pain intensity scale for children.

The present study was designed to develop and test the validity of the Asian version of the Oucher pain intensity scale, with color photographs of Taiwanese children as the pain intensity cues. A series of 3 studies were conducted. The aim of the first study was to create male and female versions of the Asian Oucher poster. Each poster consisted of 6 color photographs of children's faces, ranging from "no hurt at all" (scored as 0) to the "biggest hurt you could ever have" (scored as 5). In the second study, 220 children aged 3 to 6 years were recruited to examine the content validity. Children who were able to complete a Piagetian seriation task were asked to choose the sequence of 6 photographs. Photo sequences were adjusted according to the study findings. The third study was conducted to examine the convergent, discriminate, and clinical validity for children who are at different levels of pain intensity. In total, 111 children aged 3 to 10 years old who were experiencing surgical pain were recruited. The construct validity of the Asian Oucher was supported. PERSPECTIVE: This study developed an Asian version of Oucher, with photographs of facial expressions of real Taiwanese children who were experiencing pain. The Asian Oucher can assess pain for children as young as 3 years old.     

Evaluation of reliability, validity, and preference for a pediatric pain intensity scale: the Catalan version of the faces pain scale--revised

The main objective of this research was to determine the initial psychometric properties of the Faces Pain Scale - Revised (FPS-R) as a measure of pain intensity for use with Catalan children and adolescents. Results of the Catalan version of this scale (FPS-R-C) are similar to those obtained with the original instrument. In order to assess the validity and reliability of the FPS-R-C, two different samples were studied. The first sample contained 124 hospitalized children and adolescents (mean age 10.86; SD 2.5). They were asked to rate their affective state on the Faces Affective Scale (FAS) and the intensity of their pain on the FPS-R-C and the Coloured Analogue Scale (CAS). The pain intensity ratings reported with FPS-R-C and CAS were very similar, correlations ranging from 0.83 to 0.9. The relationship between the intensity of pain experienced and children's affective state was also statistically significant (R = 32, P < 0.01). The second sample contained 247 schoolchildren (mean age 9.43; SD 1.55), who were asked to imagine themselves in eight hypothetical painful situations and rate the degree of pain using the FPS-R-C and the CAS (correlations ranging from 0.83 to 0.96). Test-retest correlations on this questionnaire (Painful Events Inventory) ranged from 0.26 to 0.70. Overall, these results provide preliminary evidence of the reliability, and convergent and criterion-related validity of the FPS-R-C. Moreover, all participating subjects were asked to choose the pain scale they preferred the most. Our data suggest that, regardless of their age and/or gender, the subjects prefer the FPS-R-C to the CAS.     

The parents' postoperative pain measure: replication and extension to 2-6-year-old children

Pain assessment is a difficult task for parents at home following children's surgery. The purpose of the present study was to confirm the psychometric properties of a behavioural measure of postoperative pain developed to assist parents with pain assessment in children aged 7-12 years following day surgery. The study also examined the reliability and validity of the measure with children aged 2-6 years. Participants were 51 parents of children aged 7-12 years and 107 parents of children aged 2-6 years. For the 2 days following surgery, parents completed a pain diary that included global ratings of their children's pain and the 15-item Parents' Postoperative Pain Measure (PPPM). The older children provided self-reports of their pain intensity. The PPPM items showed good internal consistency on the two postoperative days for both samples (alpha's=0.81-0.88) and scores on the PPPM were highly correlated with children's (for the older children) and parents' (for the young children) global ratings of pain (r's=0.53-0.72). As global pain ratings decreased from Days 1 to 2, so did scores on the PPPM. Scores on the PPPM were successful in discriminating between children who had undergone low/moderate and high pain surgeries. The results of this study provide evidence of the reliability and validity of the PPPM as a measure of postoperative pain among children aged 2 through to 12 years.     

FLACC Behavioral Pain Assessment Scale: a comparison with the child's self-report

The purpose of this study was to further test the validity of the Faces, Legs, Activity, Cry and Consolability (FLACC) Behavioral Pain Assessment Scale for use with children. Thirty children aged 3-7 years (5.01 +/- 1.44) who had undergone a variety of surgical procedures were observed and assessed for pain intensity at 20 + 2 hours after surgery. FLACC scores were assigned by one of the nurse investigators, and a self-report of pain using the FACES scale was obtained from the child. There were significant and positive correlations between the FLACC and FACES scores for the entire sample and for the scores of children 5-7 years of age, but not for children < age 5. These findings provide additional support for the construct validity of the FLACC Pain Assessment Tool.     

Construct validity of the parents' postoperative pain measure

OBJECTIVES: Pain assessment can be a challenging task for parents, who increasingly provide the care for their children after surgery. This research provides evidence of the construct validity of the Parents' Postoperative Pain Measure (PPPM), a 15-item behavioral scale. METHODS: Study 1 examined the ability of scores on the PPPM to discriminate between pain and anxiety in a sample of 75 children (30 girls) between the ages of 7 and 12 years undergoing day surgery. Study 2 examined the sensitivity of scores on the PPPM to analgesic intervention among a sample of 28 children (7 girls) between the ages of 7 and 12 years undergoing day surgery. RESULTS: In Study 1, scores on the PPPM closely followed the pattern of children's self-reported pain intensity and not state-related anxiety. Results from Study 2 showed that scores on the PPPM, like children's self-reported pain intensity ratings, were sensitive to analgesic intervention. DISCUSSION: The results of these studies provide further support for the construct validity of the PPPM and confirm that the measure is a valid pain assessment tool for use by parents at home following children's surgeries.     

Measuring the quality of children's postoperative pain management: initial validation of the child/parent Total Quality Pain Management (TQPM) instruments

Quality improvement measurement instruments for pediatric postoperative pain management are virtually nonexistent. Without standardized instruments to measure pediatric pain management outcomes, practitioners are hampered in their efforts to improve the quality of pain management for children. In this study, instruments for children (8--12 years) and parents were developed and tested to measure the quality of children's postoperative pain management. The child (Child TQPM) and parent (Parent TQPM) Total Quality Pain Management instruments were tested with 50 parent/child dyads across two large treatment centers. The pain rating scale modified for these instruments demonstrated good criterion validity with the well established Varni/Thompson Pediatric Pain Questionnaire Visual Analogue Scale. Parent--child agreement was described for responses across instruments. Construct validity was examined through selected inter-item relationships. Psychometric analyses support the initial measurement properties of the pediatric TQPM instruments.     

Assessment of sickle cell pain in children and young adults using the adolescent pediatric pain tool

The objectives of this study were to describe and compare the characteristics of pain experienced by children and young adults with sickle cell disease (SCD) in inpatient and outpatient settings. The Adolescent Pediatric Pain Tool (APPT), a multidimensional self-report pain assessment, was completed by African American children and young adults (mean age 15.39 +/- 4.32) with SCD during a clinic visit (n = 52), day hospital visit (n = 29), or during the first 24 hours of an inpatient stay (n = 72). Multiple linear regression revealed that pain intensity, number of body areas with pain, and the quality of pain were related to age, sex, and care setting. Pain intensity, location, and quality were of greater magnitude than previous reports of early postoperative pain in children. Examining the specific dimensions of pain intensity, location, and quality and the influencing factors of age, sex, and care setting may lead to more effective treatments for SCD pain.     

The Faces Pain Scale-Revised: toward a common metric in pediatric pain measurement.

The Faces Pain Scale (FPS; Bieri et al., Pain 41 (1990) 139) is a self-report measure used to assess the intensity of children's pain. Three studies were carried out to revise the original scale and validate the adapted version. In the first phase, the FPS was revised from its original seven faces to six, while maintaining its desirable psychometric properties, in order to make it compatible in scoring with other self-rating and observational scales which use a common metric (0-5 or 0-10). Using a computer-animated version of the FPS developed by Champion and colleagues (Sydney Animated Facial Expressions Scale), psychophysical methods were applied to identify four faces representing equal intervals between the scale values representing least pain and most pain. In the second phase, children used the new six-face Faces Pain Scale-Revised (FPS-R) to rate the intensity of pain from ear piercing. Its validity is supported by a strong positive correlation (r=0.93, N=76) with a visual analogue scale (VAS) measure in children aged 5-12 years. In the third phase, a clinical sample of pediatric inpatients aged 4-12 years used the FPS-R and a VAS or the colored analogue scale (CAS) to rate pain during hospitalization for surgical and non-surgical painful conditions. The validity of the FPS-R was further supported by strong positive correlations with the VAS (r=0.92, N=45) and the CAS (r=0.84, N=45) in this clinical sample. Most children in all age groups including the youngest were able to use the FPS-R in a manner that was consistent with the other measures. There were no significant differences between the means on the FPS-R and either of the analogue scales. The FPS-R is shown to be appropriate for use in assessment of the intensity of children's acute pain from age 4 or 5 onward. It has the advantage of being suitable for use with the most widely used metric for scoring (0-10), and conforms closely to a linear interval scale.     

Validation of the numerical rating scale for pain intensity and unpleasantness in pediatric acute postoperative pain: sensitivity to change over time

This study evaluates the construct validity (including sensitivity to change) of the numerical rating scale (NRS) for pain intensity (I) and unpleasantness (U) and participant pain scale preferences in children/adolescents with acute postoperative pain. Eighty-three children aged 8 to 18 years (mean = 13.8, SD = 2.4) completed 3 pain scales including NRS, Verbal Rating Scale (VRS), and faces scales (Faces Pain Scale-Revised [FPS-R] and Facial Affective Scale [FAS], respectively) for pain intensity (I) and unpleasantness (U) 48 to 72 hours after major surgery, and the NRS, VRS and Functional Disability Index (FDI) 2 weeks after surgery. As predicted, the NRSI correlated highly with the VRSI and FPS-R and the NRSU correlated highly with the VRSU and FAS 48 to 72 hours after surgery. The FDI correlated moderately with the NRS at both time points. Scores on the NRSI and NRSU at 48 to 72 hours were significantly higher than at 2 weeks after surgery. Children found the faces scales the easiest to use while the VRS was liked the least and was the hardest to use. The NRS has adequate evidence of construct validity including sensitivity for both pain intensity and unpleasantness. This study further supports the validity of the NRS as a tool to measure both intensity and unpleasantness of acute pain in children. PERSPECTIVE: This article evaluates the construct validity including sensitivity of the Numerical Rating Scale for pain intensity and pain unpleasantness over time in children after major surgery. The NRS could be used by clinicians to assess these 2 different dimensions of children's pain experience in acute pain settings.     

Item selection and content validity of the Critical-Care Pain Observation Tool for non-verbal adults

Title. Item selection and content validity of the Critical‐Care Pain Observation Tool for non‐verbal adults. Aim. This paper is a report of the item selection process and evaluation of the content validity of the Critical‐Care Pain Observation Tool for non‐verbal critically ill adults. Background. Critically ill patients experience moderate to severe pain in the intensive care unit. While critical care clinicians strive to obtain the patient’s self‐report of pain, many factors compromise the patient’s ability to communicate verbally. Pain assessment methods often need to match the communication capabilities of the patient. In non‐verbal patients, observable behavioural and physiological indicators become important indices for pain assessment. Method. A mixed method study design was used for the development of the Critical‐Care Pain Observation Tool in 2002–2003. More specifically, a four‐step process was undertaken: (1) literature review, (2) review of 52 patients’ medical files, (3) focus groups with 48 critical care nurses, and interviews with 12 physicians, and (4) evaluation of content validity with 17 clinicians using a self‐administered questionnaire. Results. Item selection was derived from different sources of information which were convergent and complementary in their content. An initial version of the Critical‐Care Pain Observation Tool was developed including both behavioural and physiological indicators. Because physiological indicators received more criticism than support, only the four behaviours with content validity indices >0·80 were included in the Critical‐Care Pain Observation Tool: facial expression, body movements, muscle tension and compliance with the ventilator. Conclusion. Item selection and expert opinions are relevant aspects of tool development. While further evaluation is planned, the Critical‐Care Pain Observation Tool appears as a useful instrument to assess pain in critically ill patients.     

Assessing analgesic regimen adherence with the Morisky Medication Adherence Measure for Taiwanese patients with cancer pain

The purposes of this study were (1) to examine the psychometric properties of the Taiwanese version of the Morisky Medication Adherence Measure (MMAM), including its validity and reliability, (2) to investigate levels of analgesic regimen adherence, and (3) to explore the predictors of adherence to the analgesic regimen in a sample of Taiwanese cancer patients with pain. One hundred thirty-five patients receiving analgesics for cancer pain participated in this study. Instruments consisted of the Taiwanese version of the MMAM, the Barriers Questionnaire-Taiwan form, the Chinese version of the Brief Pain Inventory, the American Pain Society Outcome Questionnaire, Karnofsky Performance Status, and a demographic questionnaire. Analgesic use ratios were calculated. The Taiwanese version of the MMAM had good psychometric properties for measuring adherence with the analgesic regimens taken by Taiwanese cancer pain patients. Reliability was supported by good internal consistency Cronbach α and test-retest coefficients. Validity was corroborated by good known group validity, construct validity, and criterion-related validity. The majority of the patients (51%) showed low levels of medication adherence. The significant predictors for the medication adherence score were age, the Barriers Questionnaire score, and satisfaction with pain management by clinicians after entering pain severity, pain interference with daily life, age, gender, education, types of analgesics used, functional status, and satisfaction with pain management as independent variables. The model accounted for 63% of the variance in the medication adherence score. The Taiwanese version of the MMAM shows excellent reliability and validity. The use of this reliable, valid, simple, and easily administered tool can improve communication between patients and clinicians about use of analgesics and further improve the analgesic regimen adherence.     

Development and validation of a new self-report measure of pain behaviors

Pain behaviors that are maintained beyond the acute stage after injury can contribute to subsequent psychosocial and physical disability. Critical to the study of pain behaviors is the availability of psychometrically sound pain behavior measures. In this study we developed a self-report measure of pain behaviors, the Pain Behaviors Self Report (PaB-SR). PaB-SR scores were developed using item response theory and evaluated using a rigorous, multiple-witness approach to validity testing. Participants included 661 survey participants with chronic pain and with multiple sclerosis, back pain, or arthritis; 618 survey participants who were significant others of a chronic pain participant; and 86 participants in a videotaped pain behavior observation protocol. Scores on the PaB-SR were found to be measurement invariant with respect to clinical condition. PaB-SR scores, observer reports, and the videotaped protocol yielded distinct, but convergent views of pain behavior, supporting the validity of the new measure. The PaB-SR is expected to be of substantial utility to researchers wishing to explore the relationship between pain behaviors and constructs such as pain intensity, pain interference, and disability.     

Is the Verbal Numerical Rating Scale a Valid Tool for Assessing Pain Intensity in Children Below 8 Years of Age?

The verbal numerical rating scale (vNRS-11) is one of the most widely used scales for assessing pediatric pain intensity. The literature shows that it is a valid instrument for assessing pain intensity in children above 8 years of age. The aim of this work was to study whether the vNRS-11 is also a valid instrument when it is used with Catalan-speaking children between 6 and 8 years old. A total of 126 schoolchildren (mean age, 6.87; SD, .68) were interviewed individually. Participants reported the maximum intensity of the most frequent pain they had experienced in the previous 3 months, and the intensity they would experience in 3 circumstances, using the vNRS-11 and other widely used scales: the Faces Pain Scale-Revised (FPS-R), the mechanical visual analog scale (VAS), and the colored analog scale (CAS). They rated their affective state in relation to the pain experience and reported their pain-related disability. Participants also indicated which of the 4 scales they preferred. The vNRS-11 showed a high convergent construct validity (r = .73–.86), adequate discriminant validity (z = 2.05–5.55), and adequate criterion-related validity (r = .45–.70). The vNRS-11 was the second most preferred scale.PerspectiveThis study contributes to the increasing literature that supports the use of the vNRS-11 to assess pain intensity in children. Specifically, it shows that it can be used in children as young as 6 years of age.     

两种非语言疼痛评估工具的应用现状分析

目的：通过对两种非语言疼痛评估工具相关研究进行文献分析,为我国非语言疼痛评估工具的选择提供参考。方法运用疼痛评估工具性能评分系统对计算机检索获取的相关文献进行分析。结果共纳入29篇文献,疼痛行为量表( BPS)与重症监护疼痛观察工具( CPOT)平均得分分别为9.20分、9.32分。结论疼痛行为量表( BPS)与重症监护疼痛观察工具( CPOT)逐渐被广泛应用于非语言疼痛患者的疼痛评估,但在不同人群中两者的信效度都存在差异,仍需进一步被验证。