The evaluation of the psychometric properties of a specific quality of life questionnaire for physiological pregnancy

BACKGROUND Pregnancy is a specific condition that is neither a disease nor a normal state of health. The attention has been devoted to the relation between the normal, physiological process of pregnancy and the quality of life of women in this period is paid much less attention. Our study focuses on the evaluation of the quality of life by means of a specific questionnaire for physiological pregnancy. The main objective was to evaluate psychometric characteristics of a newly developed, specific QoL. METHODS Two measures were used: a Czech version of the generic WHOQOL-BREF, validated in 2006, and a new specific-QoL measure. Both measures were administered in each trimester to a sample of 225 pregnant women in the first trimester of a routine pregnancy. RESULTS The reliability of the WHOQOL-BREF scales at different trimesters was evaluated, including the correlation between trimesters. Based on exploratory factor analyses of the specific-QoL measure with the working title QOL-GRAV, one 9-item scale was constructed expressing the degree of specific experiences during pregnancy. All scales were found to have satisfactory internal consistency (Cronbach alphas > .7) apart from the social relations subscale of the WHOQOL-BREF. CONCLUSIONS The general quality and the specific quality of a pregnant woman's life varies. The specific QOL-GRAV scale is more sensitive to the specific experiences during pregnancy that significantly affect a pregnant woman's quality of life. A simple specific questionnaire, applicable within prenatal care as well, was designed and validated.