Abstract
Purpose
The objective of this qualitative study was to develop the items and support the content validity of the PedsQL™ Sickle Cell Disease Module for pediatric patients with sickle cell disease (SCD).
Methods
The iterative process included multiphase qualitative methodology. A literature review on SCD was conducted to generate domains of interest for the individual in-depth interviews. Ten healthcare experts with clinical experience in SCD participated in the development of the conceptual framework. A total of 13 pediatric patients with SCD ages 5–18 and 18 parents of patients ages 2–18 participated in the individual in-depth interviews. A total of 33 pediatric patients with SCD ages 5–18 and 39 parents of patients ages 2–18 participated in individually conducted cognitive interviews that included both think aloud and cognitive debriefing techniques to assess the interpretability and readability of the item stems.
Results
Six domains were derived from the qualitative methods involving patient/parent interviews and expert opinion, with content saturation achieved, resulting in 48 items. The six domains consisted of items measuring Pain Intensity/Location (9 items), Pain Interference (11 items), Worry (7 items), Emotions (3 items), Disease Symptoms/Treatment, (12 items), and Communication (6 items).
Conclusions
Qualitative methods involving pediatric patients and parents in the item development process support the content validity for the PedsQL™ SCD Module. The PedsQL™ SCD Module is now undergoing national multisite field testing for the psychometric validation phase of instrument development.



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- SCD:
-
Sickle cell disease
- HRQOL:
-
Health-related quality of life
- PedsQL™:
-
Pediatric Quality of Life Inventory™
References
Charache, S., Terrin, M. L., Moore, R. D., Dover, G. J., Barton, F. B., Eckert, S. V., et al. (1995). Effect of hydroxyurea on the frequency of painful crises in sickle cell anemia. Investigators of the multicenter study of hydroxyurea in sickle cell anemia. New England Journal of Medicine, 332, 1317–1322.
Platt, O. S., Brambilla, D. J., Rosse, W. F., Milner, P. F., Castro, O., Steinberg, M. H., et al. (1994). Mortality in sickle cell disease. Life expectancy and risk factors for early death. New England Journal of Medicine, 330, 1639–1644.
Platt, O. S., Thorington, B. D., Brambilla, D. J., Milner, P. F., Rosse, W. F., Vichinsky, E., et al. (1991). Pain in sickle cell disease. Rates and risk factors. New England Journal of Medicine, 325, 11–16.
Dampier, C., Lieff, S., LeBeau, P., Rhee, S., McMurray, M., Rogers, Z., et al. (2010). Health-related quality of life in children with sickle cell disease: A report from the comprehensive sickle cell centers clinical trial consortium. Pediatric Blood & Cancer, 55, 485–494.
Panepinto, J. A., O’Mahar, K. M., DeBaun, M. R., Rennie, K. M., & Scott, J. P. (2004). Validity of the Child Health Questionnaire for use in children with sickle cell disease. Journal of Pediatric Hematology/oncology, 26, 574–578.
Panepinto, J. A., Pajewski, N. M., Foerster, L. M., & Hoffmann, R. G. (2008). The performance of the PedsQL™ Generic Core Scales in children with sickle cell disease. Journal of Pediatric Hematology/oncology, 30, 666–673.
Panepinto, J. A., O’Mahar, K. M., DeBaun, M. R., Loberiza, F. R., & Scott, J. P. (2005). Health-related quality of life in children with sickle cell disease: Child and parent perception. British Journal Haematology, 130, 437–444.
Varni, J. W., & Limbers, C. A. (2009). The Pediatric Quality of Life Inventory: Measuring pediatric health-related quality of life from the perspective of children and their parents. Pediatric Clinics of North America, 56, 843–863.
Patrick, D. L., & Deyo, R. A. (1989). Generic and disease-specific measures in assessing health status and quality of life. Medical Care, 27, S217–S233.
Lasch, K. E., Marquis, P., Vigneux, M., Abetz, L., Arnould, B., Bayliss, M., et al. (2010). Pro development: Rigorous qualitative research as the crucial foundation. Quality of Life Research, 19, 1087–1096.
Irwin, D. E., Varni, J. W., Yeatts, K., & DeWalt, D. A. (2009). Cognitive interviewing methodology in the development of a pediatric item bank: A patient reported outcomes measurement information system (PROMIS) study. Health and Quality of Life Outcomes, 7(3), 1–10.
Varni, J. W., Burwinkle, T. M., Berrin, S. J., Sherman, S. A., Artavia, K., Malcarne, V. L., et al. (2006). The PedsQL™ in pediatric cerebral palsy: Reliability, validity, and sensitivity of the generic core scales and cerebral palsy module. Developmental Medicine and Child Neurology, 48, 442–449.
Varni, J. W., Burwinkle, T. M., Jacobs, J. R., Gottschalk, M., Kaufman, F., & Jones, K. L. (2003). The PedsQL™ in type 1 and type 2 diabetes: Reliability and validity of the Pediatric Quality of Life Inventory™ Generic Core Scales and type 1 diabetes module. Diabetes Care, 26, 631–637.
Varni, J. W., Burwinkle, T. M., Katz, E. R., Meeske, K., & Dickinson, P. (2002). The PedsQL™ in pediatric cancer: Reliability and validity of the Pediatric Quality of Life Inventory™ Generic Core Scales, Multidimensional Fatigue Scale, and Cancer Module. Cancer, 94, 2090–2106.
Varni, J. W., Burwinkle, T. M., Rapoff, M. A., Kamps, J. L., & Olson, N. (2004). The PedsQL™ in pediatric asthma: Reliability and validity of the Pediatric Quality of Life Inventory™ Generic Core Scales and Asthma Module. Journal of Behavioral Medicine, 27, 297–318.
Varni, J. W., Seid, M., Knight, T. S., Burwinkle, T. M., Brown, J., & Szer, I. S. (2002). The PedsQL™ in pediatric rheumatology: Reliability, validity, and responsiveness of the Pediatric Quality of Life Inventory™ Generic Core Scales and Rheumatology Module. Arthritis and Rheumatism, 46, 714–725.
Goldstein, S. L., Graham, N., Warady, B. A., Seikaly, M., McDonald, R., Burwinkle, T. M., et al. (2008). Measuring health-related quality of life in children with ESRD: Performance of the Generic and ESRD-Specific Instrument of the Pediatric Quality of Life Inventory™ (PedsQL™). American Journal of Kidney Diseases, 51, 285–297.
Palmer, S. N., Meeske, K. A., Katz, E. R., Burwinkle, T. M., & Varni, J. W. (2007). The PedsQL™ Brain Tumor Module: Initial reliability and validity. Pediatric Blood & Cancer, 49, 287–293.
Weissberg-Benchell, J., Zielinski, T. E., Rodgers, S., Greenley, R. N., Askenazi, D., Goldstein, S. L., et al. (2010). Pediatric health-related quality of life: Feasibility, reliability and validity of the PedsQL™ Transplant Module. American Journal of Transplantation, 10, 1677–1685.
DA, F. (2009). Guidance for industry: Patient-reported outcome measures: Use in medical product development to support labeling claims. Rockville, MD: Food and Drug Administration, US Department of Health and Human Services.
Lasch, K. E., Marquis, P., Vigneux, M., Abetz, L., Arnould, B., Bayliss, M., et al. (2010). Pro development: Rigorous qualitative research as the crucial foundation. Quality of Life Research, 19, 1087–1096.
Brod, M., Tesler, L. E., & Christensen, T. L. (2009). Qualitative research and content validity: Developing best practices based on science and experience. Quality of Life Research, 18, 1263–1278.
Krueger, R. A., & Casey, M. A. (2000). Focus groups: A practical guide for applied research (3rd ed.). Thousand Oaks, CA: Sage Publications.
Varni, J (2004). The PedsQL™ 4.0 Measurement Model for the Pediatric Quality of Life Inventory™ version 4.0: Administration guidelines. http://wwwpedsqlorg/pedsqladminhtml.
Irwin, D. E., Stucky, B. D., Thissen, D., DeWitt, E. M., Lai, J. S., Yeatts, K., et al. (2010). Sampling plan and patient characteristics of the promis pediatrics large-scale survey. Quality of Life Research, 19, 585–594.
Varni, J. W., Stucky, B. D., Thissen, D., DeWitt, E. M., Irwin, D. E., Lai, J. S., et al. (2010). PROMIS pediatric pain interference scale: An item response theory analysis of the pediatric pain item bank. Journal of Pain, 11, 1109–1119.
Irwin, D. E., Stucky, B. D., Langer, M. M., Thissen, D., DeWitt, E. M., Lai, J. S., et al. (2010). An item response analysis of the pediatric PROMIS anxiety and depressive symptoms scales. Quality of Life Research, 19, 595–607.
Yeatts, K., Stucky, B. D., Thissen, D., Irwin, D. E., Varni, J. W., DeWitt, E. M., et al. (2010). Construction of the pediatric asthma impact scale (PAIS) for the patient-reported outcomes measurement information system (PROMIS). Journal of Asthma, 47, 295–302.
Marcus, S. B., Strople, J. A., Neighbors, K., Weissberg-Benchell, J., Nelson, S. P., Limbers, C. A., et al. (2009). Fatigue and health-related quality of life in pediatric inflammatory bowel disease. Clinical Gastroenterology and Hepatology, 7, 554–561.
Varni, J. W., Limbers, C. A., Bryant, W. P., & Wilson, D. P. (2009). The PedsQL™ Multidimensional Fatigue Scale in type 1 diabetes: Feasibility, reliability, and validity. Pediatric Diabetes, 10, 321–328.
Varni, J. W., Limbers, C. A., Bryant, W. P., & Wilson, D. P. (2010). The PedsQL™ Multidimensional Fatigue Scale in pediatric obesity: Feasibility, reliability, and validity. International Journal of Pediatric Obesity, 5, 34–42.
Gold, J. I., Mahrer, N. E., Yee, J., & Palermo, T. M. (2009). Pain, fatigue, and health-related quality of life in children and adolescents with chronic pain. Clinical Journal of Pain, 25, 407–412.
Varni, J. W., Burwinkle, T. M., Limbers, C. A., & Szer, I. S. (2007). The PedsQL™ as a patient-reported outcome in children and adolescents with fibromyalgia: An analysis of OMERACT domains. Health and Quality of Life Outcomes, 5(9), 1–12.
Varni, J. W., Burwinkle, T. M., & Szer, I. S. (2004). The PedsQL™ Multidimensional Fatigue Scale in pediatric rheumatology: Reliability and validity. Journal of Rheumatology, 31, 2494–2500.
Guest, G., Bunce, A., & Johnson, L. (2006). How many interviews are enough? An experiment with data saturation and variability. Field Methods, 18, 59–82.
Acknowledgments
This work was supported by a grant from the National Institutes of Health (U54 HL090503, Project 3 and CTSI 1-UL1-RR031973).
Conflict of Interests
Dr. Varni holds the copyright and the trademark for the PedsQL™ and receives financial compensation from the Mapi Research Trust, which is a nonprofit research institute that charges distribution fees to for-profit companies that use the Pediatric Quality of Life Inventory™.
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Appendices
Appendix A






Appendix B: PedsQL™ sickle cell disease module scales child self-report item content
The number of items might change as a function of the quantitative analyses.
About my pain and hurt
-
1.
I hurt a lot
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2.
I hurt all over my body
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3.
I hurt in my arms
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4.
I hurt in my legs
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5.
I hurt in my stomach
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6.
I hurt in my chest
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7.
I hurt in my back
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8.
I have pain every day
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9.
I have pain so much that I need medicine
About my pain impact
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1.
It is hard for me to do things because I might get pain
-
2.
I miss school when I have pain
-
3.
It is hard for me to run when I have pain
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4.
I want to be alone when I have pain
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5.
It is hard to have fun when I have pain
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6.
I have trouble moving when I have pain
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7.
It is hard to stay standing when I have pa
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8.
It is hard for me to take care of myself when I have pain
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9.
It is hard for me to do what others can do because I might get pain
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10.
I wake up at night when I have pain
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11.
I get tired when I have pain
About me worrying
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1.
I worry that I will have pain
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2.
I worry that others will not know what to do if I have pain
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3.
I worry when I am away from home
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4.
I worry I might have to go to the emergency room
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5.
I worry I might have to stay overnight in the hospital
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6.
I worry I might have a stroke
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7.
I worry I might have a chest crisis
About my emotions
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1.
Needle sticks scare me
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2.
I feel mad I have sickle cell disease
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3.
I feel mad when I have pain
About my disease symptoms and treatment
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1.
I have headaches
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2.
I get yellow eyes when I am sick
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3.
It is hard for me to manage my pain
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4.
It is hard for me to control my pain
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5.
It is hard for me to remember to take my medicine
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6.
I do not like how I feel after I take my medicine
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7.
I do not like the way my medicine tastes
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8.
My medicine make me sleepy
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9.
I worry about whether my medicine is working
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10.
I worry about whether my treatments are working
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11.
My medicine does not make me feel better
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12.
Other kids make me feel different because of how I look
About communication
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1.
It is hard for me to tell others when I am in pain
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2.
It is hard for me to tell the doctors and nurses how I feel
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3.
It is hard for me to ask the doctors and nurses questions
-
4.
It is hard for me when others do not understand about my sickle cell disease
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5.
It is hard for me when others do not understand how much pain I feel
-
6.
It is hard for me to tell others I have sickle cell disease
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Panepinto, J.A., Torres, S. & Varni, J.W. Development of the PedsQL™ sickle cell disease module items: qualitative methods. Qual Life Res 21, 341–357 (2012). https://doi.org/10.1007/s11136-011-9941-4
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DOI: https://doi.org/10.1007/s11136-011-9941-4