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. 2022 Sep 8;22:694. doi: 10.1186/s12884-022-05024-z

Table 1.

Characteristics of participants

Mid-pregnancy (n = 137) Late pregnancy (n = 144)
Variable (n = 281) N (%) or
Mean (SD)
Range N (%) or
Mean (SD)
Range p
Age 30.7 (3.6) 20–38 30.8 (3.8) 21–48 .770
Gestational period (week) 22.6 (3.8) 14.3–27.9 32.7 (3.05) 28.0–39.0  < .001
Planned No 47 (34.6) 48 (33.8) .894
pregnancy Yes 89 (65.4) 94 (66.2)
Education  ≤ High school 19 (13.9) 25 (17.5) .538
College 99 (72.3) 103 (72.0)
Graduate 19 (13.9) 15 (10.5) .288
Employment No 105 (77.2) 101 (71.6)
Yes 31 (22.8) 40 (28.4)
Household income Very low 15 (11.0) 19 (13.9) .897
Low 88 (64.7) 85 (62.0)
Middle 24 (17.6) 25 (18.2)
High 9 (6.6) 8 (5.8)
Regular No 83 (60.6) 76 (52.8) .282
exercise Yes 54 (39.4) 67 (46.5)
Pre-pregnancy Underweight 19 (13.9) 25 (17.4) .142
BMI Healthy weight 90 (65.7) 93 (64.6)
Overweight 9 (6.6) 16 (11.1)
Obese 19 (13.9) 10 (6.9)
Sleep quality Good (≤ 5) 59 (43.4) 46 (32.2) 0.53
Poor (≥ 6) 77 (56.6) 97 (67.8)
Depressive symptoms 9.5 (7.3) 0–34 10.9 (8.4) 0–38 .135
Pregnancy stress 51.7 (10.1) 28–82 51.3 (11.4) 20–95 .749

SD Standard deviation, BMI Body mass index