Prevalence rates of impaired glucose tolerance and gestational diabetes mellitus amongst expectant mothers and undiagnosed diabetes mellitus in walk-in patients at health centres in North Central Trinidad.

Objective: To assess the prevalence rates of impaired glucose tolerance and gestational diabetes among expectant mothers, as well as the prevalence rate of undiagnosed diabetes mellitus in walk-in patients at selected health centres in North Central Trinidad.

Design: A cross-sectional study over the period January 2012 to December 2016.

Setting: Primary health care centres.