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Table 1 Characteristics of the sample, by class

From: Distinct trajectories of perinatal depression in Chinese women: application of latent growth mixture modelling

Demographics

Total (n = 550)

Decreasing (n = 524, 95.3%)

Increasing (n = 26, 4.7%)

(n, %)

Mean (SD)

n (%)

Mean (SD)

n (%)

Mean (SD)

Age

 

28.7 (4.1)

 

28.7 (4.1)

 

29.4 (4.1)

Location

 City

192 (34.9)

 

183 (34.9)

 

9 (34.6)

 

 Rural

358 (65.1)

 

341 (65.1)

 

17 (65.4)

 

Years of education

 ≤ 9 years

72 (13.1)

 

68 (13.0)

 

4 (15.4)

 

 10–12 years

119 (21.6)

 

116 (22.1)

 

3 (11.5)

 

 13–16 years

359 (65.3)

 

340 (64.9)

 

19 (73.1)

 

Monthly income

 <¥ 5000

117 (21.3)

 

109 (20.8)

 

8 (30.8)

 

 ≥ ¥5000

433 (78.7)

 

415 (79.2)

 

18 (69.2)

 

History of smoking

 No

537 (97.6)

 

514 (98.1)

 

23 (88.5)

 

 Yes

13 (2.4)

 

10 (1.9)

 

3 (11.5)

 

History of alcohol

 No

519 (95.3)

 

497 (94.8)

 

22 (84.6)

 

 Yes

31 (4.7)

 

27 (5.2)

 

4 (15.4)

 

Exercise during pregnancy

 No

478 (86.9)

 

455 (86.8)

 

23 (88.5)

 

 Yes

72 (13.1)

 

69 (13.2)

 

3 (11.5)

 

Abortion

 No

326 (59.3)

 

310 (59.2)

 

16 (61.5)

 

 Yes

224 (40.7)

 

214 (40.8)

 

10 (38.5)

 

Gestational diabetes

 No

491 (89.3)

 

475 (90.6)

 

16 (61.5)

 

 Yes

59 (10.7)

 

49 (9.4)

 

10 (38.5)

 

Gestational hypertension

 No

536 (97.5)

 

512 (97.7)

 

24 (92.3)

 

 Yes

14 (2.5)

 

12 (2.3)

 

2 (7.7)

 

Social support

 

29.5 (3.8)

 

29.7 (3.8)

 

26.7 (3.4)

Objective social support

 

12.4 (2.1)

 

12.5 (2.0)

 

11.3 (2.5)

Subjective social support

 

9.4 (1.8)

 

9.4 (1.8)

 

8.6 (1.2)

Availability of support

 

7.7 (1.8)

 

7.8 (1.9)

 

7.1 (1.4)

EPDS scores (T1)

 

7.6 (3.7)

 

7.6 (3.8)

 

7.0 (2.1)

EPDS scores (T2)

 

6.4 (3.5)

 

6.2 (3.3)

 

10.5 (3.2)

EPDS scores (T3)

 

6.2 (4.5)

 

5.4 (3.3)

 

18.4 (4.5)

  1. SD Standard deviation, T1 Late pregnancy (32 ± 4 weeks gestation), T2 1 week postpartum, T3 6 weeks postpartum, EPDS Edinburgh postnatal depression scale