The Brazilian Portuguese version of the Pregnancy Mobility Index: Cross-cultural adaptation and psychometric evaluation – a validation study

Abstract

The Pregnancy Mobility Index (PMI) was developed to assess mobility in pregnant women in the Netherlands. At present, no similar questionnaire is available in Brazil.The present study aimed to translate, cross-culturally adapt, and evaluate the psychometric properties of a Brazilian PMI.The present study was a validation study conducted at the Universidade Federal do Paraná and a public maternity ward in Curitiba, Brazil.Text translation and cross-cultural adaptation followed international guidelines. Construct validity, internal consistency, and inter- and intra-rater reliability tests included 97 women. The Pelvic Girdle Questionnaire, Multidimensional Pain Evaluation Scale, Schober's test, and lumbar spine range of motion assessment were administered on the first day. Intra-rater reliability (n = 19) was measured after 15 days. Exploratory factor analysis was performed, and the correlation matrix was analyzed using Pearson's coefficient.Pregnant women (88%) understood the cultural adaptation process. The internal consistency was high (Cronbach's alpha > 0.90), construct validity was moderate, with significant correlation between lumbar spine range of motion (r = 0.283-0.369) and Schober's test (r = -0.314), and high correlation between the Multidimensional Pain Evaluation Scale (r = -0.650 and -0.499) and Pelvic Girdle Questionnaire (r = -0.737). Intra- and inter-rater reliabilities were excellent (intraclass correlation coefficient = 0.932 and 0.990, respectively).The Brazilian version of the PMI was successfully translated with excellent reliability and moderate-to-high construct validity. It is an important tool for assessing mobility in pregnant women.RBR-789tps (Validation study), https://ensaiosclinicos.gov.br/rg/RBR-789tps.