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Table 1 Descriptive statistics of variables used in the analysis (N = 156)

From: Retinoids, anxiety and peripartum depressive symptoms among Chinese women: a prospective cohort study

Variables

Mean (SD)

n (%)

Age (years)

26.65 (2.70) (22 to 35)

 

Education level

 High school or below

 

7 (4.50)

 College

 

13 (8.40)

 Undergraduate or high

 

134 (87.0)

Monthly income (RMB)

  < 3000

 

10 (6.50)

 3000–5000

 

114 (74.0)

  > 5000

 

30 (19.50)

Parity

 First birth

 

97 (63.0)

 Subsequent

 

57 (37.0)

Weeks of delivery

38.99 (1.31) (36 to 41)

 

Delivery mode

 Vaginal birth

 

84 (54.50)

 Cesarean section

 

70 (45.50)

Exclusive breastfeeding (T2)

 

52 (33.33)

Exclusive breastfeeding (T3)

 

76 (48.71)

RBP level (mg/L)

 T1

38.39 (2.47)

 

 T2

40.35 (1.62)

 

 T3

36.86 (1.97)

 

Estradiol level (pmol/L)

 T1

14,539.46 (1503.49)

 

 T2

2790.27 (1081.80)

 

 T3

231.76 (49.89)

 

Progesterone level (nmol/L)

 T1

205.81 (52.53)

 

 T2

12.58 (8.95)

 

 T3

4.72 (1.82)

 

Mean PSQI score

 T1

8.67 (3.48)

 

 T2

8.79 (3.55)

 

 T3

8.61 (3.35)

 

SAS score

  ≥ 50 at T1

 

54 (34.61)

  ≥ 50 at T2

 

51 (32.69)

  ≥ 50 at T3

 

57 (36.53)

EPDS score

  ≥ 10 at T1

 

48 (30.76)

  ≥ 10 at T2

 

43 (27.56)

  ≥ 10 at T3

 

56 (35.89)

  1. T1, at the third trimester; T2, after delivery at week one; T3, after delivery at week six
  2. Abbreviations: EPDS Edinburgh Postnatal Depression Scale, PSQI Pittsburgh Sleep Quality Index, RBP retinol-binding protein, SAS Self-rating Anxiety Scale