Development and validation of the SEC-QOL questionnaire in women using contraceptive methods
Perez-Campos, Ezequiel; Duenas, Jose Luis; de la Viuda, Esther; Gomez, Maria Angeles; Lertxundi, Roberto; Sanchez-Borrego, Rafael; Canals, Ignaci; Bermejo, Rafael; Arbat, Agnes; Badia, Xavier; Perulero, Nuria; Lete, Luis Ignacio
Value in Health
OBJECTIVES: Develop and validate a Spanish society of contraception quality-of-life (SEC-QOL) questionnaire to assess the impact of contraceptive methods on the health-related quality of life (HRQOL) of women. METHODS: SEC-QOL was developed following a standardized procedure including review of the literature, interviews with contraception users, and the administration of a pilot questionnaire to 187 women. SEC-QOL consists of 19 items and includes five dimensions. To validate the questionnaire, a multicenter, observational, prospective study was conducted in Spain. The following three study groups were defined: group A (n = 129) comprised women using effective contraceptive methods; group B (n = 251), comprised women about to start using an effective method; and group C (n = 73) comprised women using no or poorly effective contraception. All women attended baseline and final visits (4 +/- 1 months). Participants completed the SEC-QOL, psychological well-being index, EuroQol five-dimensional questionnaire, and perceived health state questionnaires. RESULTS: At baseline, women from group A had a better HRQOL in all SEC-QOL dimensions, except for breast symptoms. Heavier menstrual bleeding, more androgenic and breast symptoms, menstrual pain, and not using hormonal contraceptive methods were associated with lower HRQOL. SEC-QOL scores showed moderate correlations to psychological well-being index and slightly lower correlation to EuroQol five-dimensional questionnaire scores. At follow-up, HRQOL had improved in all groups; most markedly in group B, which obtained an average effect size of 0.59. The minimum important difference was established as a 3.4-point change in the global SEC-QOL score. SEC-QOL obtained a Cronbach’s alpha of 0.88 and an intraclass correlation coefficient of 0.82. CONCLUSIONS: SEC-QOL is a valid, reliable, and sensitive to change questionnaire for use in daily clinical practice and future research projects on contraception. Copyright Copyright 2011 International Society for Pharmacoeconomics and Outcomes Research (ISPOR). Published by Elsevier Inc. All rights reserved.