Table 1 Clinical characteristics of the study participants (n = 240).

From: Five serum fatty acids are associated with subclinical hypothyroidism in a Chinese pregnant population

 

Normal (n = 222)

SCH (n = 18)

P value

Age, years

28 (26, 30)

28 (27, 31)

0.22

Total years of schooling

16 (15, 16)

16 (15, 16)

0.64

Gravidity

2 (1, 2)

2 (1, 2)

0.93

Parity

0 (0, 0)

0 (0, 0)

0.74

BMI (kg/m2)

  1st trimester

20.6 (19.2, 22.4)

20.1 (18.5, 21.9)

0.35

  2nd trimester

22.9 (21.2, 24.8)

22.2 (20.6, 23.7)

0.30

  3rd trimester

24.5 (22.3, 26.2)

23.3 (22.2, 25.7)

0.51

sBP (mmHg)

  1st trimester

112 (106.3, 121.0)

112 (110.0, 118.5)

0.76

  2nd trimester

116 (110.0, 122.0)

118 (112.0, 122.8)

0.65

  3rd trimester

116 (108.0, 120.0)

120 (110.5, 121.0)

0.30

dBP (mmHg)

  1st trimester

70 (65.0, 76.0)

74.5 (70.0, 76.0)

0.17

  2nd trimester

71 (68.0, 76.0)

69.5 (66.3, 74.8)

0.29

  3rd trimester

72 (68.0, 76.0)

70.5 (63.5, 77.5)

0.84

GA at sampling (weeks)

  1st trimester

12.7 (12.1, 13.3)

12.3 (12.1, 13.1)

0.23

  2nd trimester

24.3 (23.7, 24.6)

24.2 (23.9, 24.9)

0.47

  3rd trimester

32.3 (31.7, 32.7)

32.1 (23.9, 24.9)

0.23

s-TSH (uIU/ml)

1.19 (1.16, 1.39)

3.30 (3.16, 4.62)

1.41E-11***

FT4 (ng/ml)

0.83 (0.81, 0.86)

0.79 (0.75, 0.85)

0.29

  1. All clinical data are summarized as median (25th percentile, 75th percentile) because each of the variables was not normally distributed. P values were calculated using a Mann-Whitney test, ***p < 0.001. Abbreviations: SCH, subclinical hypothyroidism; BMI, body mass index; BP, blood pressure; sBP, systolic blood pressure; dBP, diastolic blood pressure; GA, gestational age.
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