Skip to main content

Table 3 Effect of FA supplement in different BMI group for PTD

From: Folic acid supplementation, preconception body mass index, and preterm delivery: findings from the preconception cohort data in a Chinese rural population

BMI group

FA supplement OR (95 % CI)

No

Yes

1st trimester

Preconception

Normal

ref

0.60

(0.57,0.63)

0.65

(0.61,0.69)

0.58

(0.55,0.62)

Underweight

ref

0.57

(0.51,0.64)

0.60

(0.52,0.69)

0.56

(0.49,0.63)

Overweight

ref

0.85

(0.73,0.98)

0.65

(0.53,0.79)

0.94

(0.80,1.10)

Obesity

ref

0.77

(0.65,0.91)

0.60

(0.37,0.97)

1.15

(0.81,1.64)

  1. Note: Adjusted for maternal education, career, ethnic, hypertension, anemia, alcohol use