PMID- 17183614 OWN - NLM STAT- MEDLINE DCOM- 20070410 LR - 20191210 IS - 0315-162X (Print) IS - 0315-162X (Linking) VI - 34 IP - 3 DP - 2007 Mar TI - The Quality of My Life questionnaire: the minimal clinically important difference for pediatric rheumatology patients. PG - 581-7 AB - OBJECTIVE: To determine parent-child agreement for the Quality of My Life (QoML) questionnaire. To establish construct validity of the QoML questionnaire. To determine the minimal clinically important difference (MCID) for the Quality of Life (QOL) and Health-Related Quality of Life (HRQOL) scales. METHODS: A total of 136 families of children with inflammatory arthritis were interviewed. The QoML questionnaire was completed for the child's current state of health, and under 2 hypothetical scenarios, where (1) there is a hypothetical small improvement, and (2) there is a hypothetical small deterioration in health. The differences between the original QOL and HRQOL scores and hypothetical improvement and deterioration scores, respectively, were calculated to give MCID scores. RESULTS: In total, 131 families completed the questionnaires. Intraclass correlation coefficients for parent proxy report and patient self-report of the QOL and HRQOL were 0.63 and 0.40, respectively. Correlations of QOL with pain and disease severity were moderately negative (r = -0.55 and -0.56, respectively, p < 0.0001). Correlations of HRQOL with pain and disease severity were strongly negative (r = -0.66 and r = -0.68, respectively, p < 0.0001). The MCID for improvement on the QOL was 7 mm, and for the HRQOL 11 mm. The MCID for deterioration in QOL was -33 mm, and for HRQOL -38 mm. CONCLUSION: The QoML questionnaire demonstrated fair parent-child agreement and good convergent construct validity. MCID scores will enable clinicians to interpret QoML questionnaire results in a clinically meaningful way. FAU - Gong, Grace W K AU - Gong GW AD - Division of Rheumatology, Population Health Sciences Program, Research Institute, The Hospital for Sick Children, Toronto, Ontario, Canada. FAU - Young, Nancy L AU - Young NL FAU - Dempster, Helen AU - Dempster H FAU - Porepa, Michelle AU - Porepa M FAU - Feldman, Brian M AU - Feldman BM LA - eng PT - Journal Article PT - Validation Study DEP - 20061215 PL - Canada TA - J Rheumatol JT - The Journal of rheumatology JID - 7501984 SB - IM CIN - J Rheumatol. 2007 Mar;34(3):463-5. PMID: 17343299 MH - Arthritis/*complications/therapy MH - Child MH - Clinical Trials as Topic MH - Female MH - Health Status MH - Humans MH - Male MH - Pain/etiology MH - Parent-Child Relations MH - *Quality of Life MH - *Reproducibility of Results MH - *Severity of Illness Index MH - *Surveys and Questionnaires MH - Treatment Outcome EDAT- 2006/12/22 09:00 MHDA- 2007/04/11 09:00 CRDT- 2006/12/22 09:00 PHST- 2006/12/22 09:00 [pubmed] PHST- 2007/04/11 09:00 [medline] PHST- 2006/12/22 09:00 [entrez] AID - 06/13/1221 [pii] PST - ppublish SO - J Rheumatol. 2007 Mar;34(3):581-7. Epub 2006 Dec 15.