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Table 1 Definition and classification of ANC adequacy

From: Urban - rural disparities in antenatal care utilization: a study of two cohorts of pregnant women in Vietnam

Indicators Adequate use Inadequate use
Number of ANC visits At least three visits Less than three visits
Time for fist visit During first trimester After first trimester
Content of ANC   
Core services (measurement of weight and height; assessment of blood pressure; fetal examination*; urine test; tetanus vaccination; health consultation) Use of all core services at least once No use of at least one of six core services
Optional services (vaginal examination; blood test; iron/folate supplement; malaria prevention; ultrasound scan) Yes or No Yes or No
  1. * Including fundal height, abdominal circumference and heart rate measurement