Trajectories and predictors of women's health-related quality of life during pregnancy

The objective of this study was to identify distinct trajectories and their predictors of healthrelated quality of life (HRQOL) of women during pregnancy in a prospective mother and child cohort. Analyses were based on 3936 Dutch pregnant women in Rotterdam area, the Netherlands. Information on potential predictors was collected in early pregnancy by questionnaire. Latent Class Mixture Modelling and Multinomial Logistic Regression were applied to assess the trajectory and predictors of HRQOL during pregnancy. HRQOL was measured by SF-12 in early, mid- and late pregnancy; physical and mental component summary (PCS-12/MCS- 12) scores were calculated. Four physical HRQOL trajectories were identified: A healthy trajectory ('healthy') in 63.3%, consistently low ('vulnerable') in 10.8%; a small increase ('recovering') in 12.8% and a large decrease ('at risk') in 13.1%. Three mental HRQOL trajectories were identified: A healthy trajectory ('healthy') in 86.1%; a large increase ('recovering') in 7.5%; and a large decrease ('at risk') in 6.4%. Compared with healthy trajectories, the likelihood of following the 'vulnerable' physical HRQOL trajectory rather than a healthy trajectory was increased by daily fatigue(OR: 4.82[2.76, 8.40]), pelvic pain (OR:4.76[2.91, 7.78]) and back pain (OR:5.29[3.21, 8.70]); pregnancy-specific anxiety increased the likelihood of following the 'at risk' mental HRQOL trajectory (OR:7.95[4.84, 13.05]). Healthy physical and mental HRQOL trajectories during pregnancy were most common. Predictors indicative of poor HRQOL trajectories included pregnancy-related symptoms and anxiety.

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