Table 3 Hazard ratio (95% CI) of postpartum depression by tertiles of the NLOBS (n = 243).

From: Association between oxidative balance score and risk of postpartum depression in Iranian women: a prospective cohort study

 

T1

T2

T3

Ptrend*

Tertiles of energy-adjusted NLOBS

Crude

1.00

0.67 (0.34–1.31)

0.34 (0.14–0.81)

0.01

Model 1

1.00

0.73 (0.37–1.45)

0.40 (0.16–0.99)

0.04

Model 2

1.00

0.84 (0.41–1.72)

0.36 (0.14–0.90)

0.03

Model 3

1.00

0.97 (0.45–2.09)

0.32 (0.12–0.84)

0.02

Tertiles of energy-adjusted nutrient.OBS

Crude

1.00

0.94 (0.49–1.80)

0.40 (0.16–1.01)

0.07

Model 1

1.00

1.02 (0.53–1.97)

0.48 (0.18–1.28)

0.20

Model 2

1.00

1.19 (0.60–2.37)

0.37 (0.13–0.99)

0.09

Model 3

1.00

1.08 (0.54–2.17)

0.32 (0.11–0.90)

0.05

  1. Model 1: Adjustment for maternal age and maternal energy intake. Model 2: Further adjustment for duration of marriage, pregnancy satisfaction, parity, medical conditions, history of Abortion, and socioeconomic status. Model 3: Additional adjustment for infant gender, infant feeding, type of delivery, preterm birth, infant medical conditions at birth, and infant hospitalization.
  2. NLOBS Components: dietary Antioxidants: Vitamin C, Folate, Beta-carotene, Lycopene, Beta-cryptoxanthin, Lutein and zeaxanthin, Vitamin E, Vitamin D, Selenium, Fiber, Zinc, Calcium/ Dietary Prooxidants: Iron, Polyunsaturated fatty acids (PUFA)/ Non-dietary Antioxidants: Physical activity/ Non-dietary Prooxidants: Smoking, Passive smoking, Pre-pregnancy obesity, Excessive weight gain during pregnancy.
  3. PPD: postpartum depression.
  4. *Obtained by Cox proportional hazard regression model.
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