Objective: To determine the trend in incidence of preterm birth over five years and its predictors in a single centre.Design: A cross sectional study using electronic data from a Total Hospital Information System (THIS) and computerized birth registry system.Setting: A single teaching and referral hospital in the Greater Kuala Lumpur, Malaysia.Population or Sample: All livebirths delivered in the centre from January 2011 to December 2015 weighing ≥500g.Methods: Logistic regressions with backward likelihood ratio were used.
Main outcome measures: Preterm live birth and live term babies.Results: 31,405 live births were included. There was almost 20% increment in the incidence of preterm births between 2011 and 2012 which then gradually decreased until 2015. Maternal age of 20-34 years (OR 0.7, 95% CI 0.7-0.8) was noted as a protective factor. The highest risk level of the pregnancy (OR 2.83, 95% CI 2.3-3.4), multiple pregnancy (OR 2.2, 95% CI 1.8-2.6), low birth weight (OR 18.7,) and male infant (OR 1.3, 95% CI 1.2-1.5) were noted as risk factors.
Conclusions:The incidence showed an upward trend between 2011 and 2012 then a gradual decrease until 2015 with a similar pattern reported by national data. The predictors of preterm birth in the study centre were birth weight, risk level of the pregnancy, multiplicity of pregnancy, maternal age and infant gender. Continuum of care using the risk level coding assessment must be enhanced at the primary care level especially for appropriate referral and co-management at a referral centre (secondary or tertiary hospital).