The DOI matches its Crossref record; 16 of the 16 references it cites were found in a registry or an index.
The IMPACT Questionnaire: A Valid Measure of Health‐Related Quality of Life in Pediatric Inflammatory Bowel Disease
Abstract
Background and aims: IMPACT is a disease‐specific health‐related quality‐of‐life questionnaire developed for use in pediatric inflammatory bowel disease through a process of patient interviews and analysis of patient responses to an item‐reduction questionnaire. This study sought to assess the feasibility, reliability, and validity of the instrument. Methods: The readability statistics and number of unanswered questions were assessed among 147 patients (97 CD, 50 UC) with mean age 14.4 ± 2.2 years (range 9.2–18.0 years) using the self‐administered questionnaire. Internal consistency was assessed with Cronbach's α and test‐retest reliability using intraclass correlation coefficient (ICC). Construct validity was based on a priori hypotheses. Mean total scores were compared by ANOVA among patients grouped according to disease activity and disease severity within the past year. Results: The readability statistic showed a Flesch‐Kincaid Grade level of 4.5. Only 0.68% of questions were left blank. Reliability was excellent with Cronbach's α = 0.96, and an ICC of 0.90 in patients with stable disease over a two‐week period (n = 32). The mean total IMPACT score for patients with quiescent disease (180 ± 32) was significantly higher (better QOL) than for those with active disease (146 ± 31 for mild, 133 ± 34 for moderate/severe) (P < 0.005). Conclusions: The IMPACT questionnaire is a valid and reliable reflection of health‐related quality of life of older children and adolescents with both ulcerative colitis and Crohn's disease.
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Flesch, R. (1948) · Journal of Applied Psychology · doi:10.1037/h0057532 · Cited by 5,391
McHorney, C. A., Ware, J. E., Rachel Lu, J. F., & Sherbourne, C. D. (1994) · Medical Care · doi:10.1097/00005650-199401000-00004 · Cited by 4,458
A new measure of health status for clinical trials in inflammatory bowel disease
Guyatt, G., Mitchell, A., Irvine, E. J., Singer, J., Williams, N., Goodacre, R., & Tompkins, C. (1989) · Gastroenterology · doi:10.1016/0016-5085(89)90905-0 · Cited by 1,298
Development and Validation of a Pediatric Crohn's Disease Activity Index
Hyams, J. S., Ferry, G. D., Mandel, F. S., Gryboski, J. D., Kibort, P. M., Kirschner, B. S., Griffiths, A. M., Katz, A. J., Grand, R. J., Boyle, J. T., et al. (1991) · Journal of Pediatric Gastroenterology and Nutrition · doi:10.1002/j.1536-4801.1991.tb10268.x · Cited by 1,050
Self-citationJenney, M. E. M., & Campbell, S. (1997) · Archives of Disease in Childhood · doi:10.1136/adc.77.4.347 · Cited by 742
Irvine, E. J., Feagan, B., Rochon, J., Archambault, A., Fedorak, R. N., Groll, A., Kinnear, D., Saibil, F., & McDonald, J. W. D. (1994) · Gastroenterology · doi:10.1016/0016-5085(94)90585-1 · Cited by 712
Sample size requirements for reliability studies
Donner, A., & Eliasziw, M. (1987) · Statistics in Medicine · doi:10.1002/sim.4780060404 · Cited by 699
A comparison of different indices of responsiveness
Wright, J. G., & Young, N. L. (1997) · Journal of Clinical Epidemiology · doi:10.1016/s0895-4356(96)00373-3 · Cited by 450
Griffiths, A. M., Nicholas, D. B., Smith, C., Munk, M., Stephens, D., Durno, C. A., & Sherman, P. M. (1999) · Journal of Pediatric Gastroenterology and Nutrition · doi:10.1097/00005176-199904001-00009 · Cited by 118
Self-citationHealth status in inflammatory bowel disease
Garrett, J. W., & Drossman, D. A. (1990) · Gastroenterology · doi:10.1016/0016-5085(90)91234-w · Cited by 115
Cited by
Quality of life in inflammatory bowel disease: a systematic review and meta-analyses—part II
Knowles, S. R., Keefer, L., Wilding, H., Hewitt, C., Graff, L. A., & Mikocka-Walus, A. (2018) · Inflammatory Bowel Diseases · doi:10.1093/ibd/izy015 · Cited by 416
Casellas, F., Arenas, J. I., Baudet, J. S., Fábregas, S., García, N., Gelabert, J., Medina, C., Ochotorena, I., Papo, M., Rodrigo, L., et al. (2005) · Inflammatory Bowel Diseases · doi:10.1097/01.mib.0000159661.55028.56 · Cited by 269
Patient-reported outcomes as primary end points in clinical trials of inflammatory bowel disease
Williet, N., Sandborn, W. J., & Peyrin–Biroulet, L. (2014) · Clinical Gastroenterology and Hepatology · doi:10.1016/j.cgh.2014.02.016 · Cited by 260
A meta-analytic review of the psychosocial adjustment of youth with inflammatory bowel disease
Greenley, R. N., Hommel, K. A., Nebel, J., Raboin, T., Li, S.-H., Simpson, P., & Mackner, L. (2010) · Journal of Pediatric Psychology · doi:10.1093/jpepsy/jsp120 · Cited by 259
Nicholas, D. B., Otley, A., Smith, C., Avolio, J., Munk, M., & Griffiths, A. M. (2007) · Health and Quality of Life Outcomes · doi:10.1186/1477-7525-5-28 · Cited by 140
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Metadata
- Authors
- Otley, A., Smith, C., Nicholas, D., Munk, M., Avolio, J., Sherman, P. M., & Griffiths, A. M.
- Venue
- Journal of Pediatric Gastroenterology and Nutrition
- Publisher
- Wiley
- Published
- 2002-10
- Volume
- 35
- Issue
- 4
- Pages
- 557-563
- ISSN
- 0277-2116 (ISSN-L)
- 1536-4801
- OpenAlex
- W2330344211
- Cited by
- 265
- References
- 16
- FWCI
- 2.33
- Type
- journal article
- Language
- en
- Open access
- closed
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- Otley, A., Smith, C., Nicholas, D., Munk, M., Avolio, J., Sherman, P. M., & Griffiths, A. M. (2002). The IMPACT Questionnaire: A Valid Measure of Health‐Related Quality of Life in Pediatric Inflammatory Bowel Disease. Journal of Pediatric Gastroenterology and Nutrition. https://doi.org/10.1002/j.1536-4801.2002.tb07885.x
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