A Case-Control Study on Risk Factors for Preterm Deliveries in a Secondary Care Hospital, Southern India

Table 1

Diagnostic criteria for clinical conditions.

Clinical condition	Criteria
Gestational diabetes mellitus	Fasting plasma glucose ≥92 mg/dL to 126 mg/dL (as fasting plasma glucose ≥126 mg/dL is consistent with overt diabetes)
Pregnancy induced hypertension	Systolic blood pressure ≥130 mm Hg and/or Diastolic blood pressure ≥90 mm Hg
Anemia	Hemoglobin <11.0 g/dL
Oligohydramnios	Amniotic fluid index <8