Psychometric Characteristics of Childbearing Motivation Questionnaire: A Review

Considering the important role of understanding the childbearing motivations in counseling services about childbearing behavior, and need for applying a valid and reliable instrument to assess it in Iranian society, this study was conducted to determine Childbearing motivation. Questionnaire was validated in two versions including Persian and English. The review aimed to comprehensively review the validity and reliability of Childbearing Motivation Questionnaire to provide comprehensive information to health providers. We conducted an extensive search on online databases (Medline, EMBASE, Web of Science, Scopus, Cochrane Library, and CINAHL) from inception until September 2019. The following keywords were used: ("Childbearing Questionnaire" OR "CBQ") AND ("Factor Analysis" OR "Exploratory Factor Analysis" OR "Confirmatory Factor Analysis" OR "Reliability" OR "Psychometric" OR "Cronbach's alpha" OR "Test-retest Reliability" OR "Intra-class Correlation Coefficient" OR "ICC"). COSMIN checklist was used to assess the methodological quality of studies. Three studies were included in review. Intra-class correlation coefficient (ICC), Cronbach's alpha coefficient and the test–retest reliability indicated satisfactory reliability of the CBQ.  Original version of Childbearing Motivation Questionnaire was developed by Miller (1995). In Persian version, original model did not show the ‘acceptable’ fit. After removing eight factors with low loading and two correlated error terms, modified model was found to have "adequate" fitness (Comparative Fit Index (CFI=.91), Tucker–Lewis Index (TLI=.90), Root Mean Square Error of Approximation (RMSEA=.04), and Chi-square to degree of freedom x2/df=1.92). The Persian and English version of childbearing motivation has good construct validity and reliability. Future research needs to test six-factor model with 49 total items and modified model with 43 items in various populations.