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Table 1 Characteristics of subjects with and without subclinical hypothyroidism

From: Lifestyle is associated with thyroid function in subclinical hypothyroidism: a cross-sectional study

Characteristics EUTH (n = 159) SCH (n = 159) *P value
Female, % 45.3 49.1 0.500
Age, years 40.6 ± 15.0 42.4 ± 15.8 0.297
Anthropometric variables
  BMI, kg/m2 22.6 ± 3.1 23.9 ± 3.2 < 0.001
  WC, cm 77.8 ± 10.6 81.7 ± 9.5 0.001
  SBP, mmHg 122.3 ± 16.2 127.0 ± 19.0 0.019
  DBP, mmHg 76.4 ± 10.8 80.0 ± 11.6 0.013
Laboratory measurements
  TSH, mIU/L 1.92 (1.42, 2.51) 5.01 (4.60,6.13) < 0.001
  TPOAb +, % 8.8 19.5 0.006
  TgAb +, % 6.3 26.4 < 0.001
  UIC, µg/L 140.70 (89.28, 222.40) 152.20 (99.73,227.90) 0.275
  FBG, mmol/L 5.04 (4.69, 5.66) 5.17 (4.80, 5.50) 0.262
  HbA1c, % 5.8 ± 0.9 5.9 ± 1.0 0.472
  TG, mmol/L 0.98 (0.69, 1.37) 1.08 (0.81, 1.59) 0.102
  TC, mmol/L 4.88 ± 1.09 5.09 ± 1.19 0.087
  HDL-C, mmol/L 1.37 ± 0.40 1.35 ± 0.38 0.151
  LDL-C, mmol/L 2.44 ± 0.70 2.57 ± 0.79 0.712
  UA, mmol/L 340.35 ± 95.15 346.59 ± 92.61 0.554
Lifestyle information
  PSQI ≥ 7, % 15.1 25.8 0.018
  More than 30 min lunch break, % 44.7 52.8 0.145
  Stay up late on weekdays, % 54.7 23.9 < 0.001
  Stay up late on weekends, % 67.3 62.9 0.410
  Sleep duration on weekdays (< 5 h/5 ~ 6 h/7 ~ 8 h/9 ~ 10 h/>10 h), % 1.9/27.7/57.9/12.6/0 4.4/32.7/52.2/8.2/2.5 0.087
  Sleep duration on weekends (< 5 h/5 ~ 6 h/7 ~ 8 h/9 ~ 10 h/>10 h), % 1.3/15.1/59.1/24.5/0 1.9/20.8/61.6/11.9/3.8 0.003
  Exercise and intensity (no/low/medium or high), % 38.4/44.0/17.6 42.1/35.2/14.5 0.242
  Daily salt intake (< 5 g/5 ~ 10 g/>10 g), % 14.5/73/12.6 14.5/73/12.6 0.759
  Iodized salt intake, % 95.0 89.3 0.061
  Iodine-rich foods intake (none/monthly/daily), % 11.9/70.4/17.6 13.2/71.1/15.7 0.872
  Smoking, % 18.9 16.4 0.556
  1. *P value < 0.05 was considered significant
  2. Data are shown as mean (SD), median (interquartile range), or percentage
  3. PSQI Pittsburg sleep quality index scale; UIC urinary iodine concentration; TSH thyroid stimulating hormone; TPOAb thyroid peroxidase antibody; TgAb thyroid globulin antibody; BMI body mass index; WC waist circumference; SBP systolic blood pressure; DBP diastolic blood pressure; FBG fasting blood glucose; HbA1c glycosylation hemoglobin; TG triglyceride; TC total cholesterol; HDL-C high density lipoprotein cholesterol; LDL-C low density lipoprotein cholesterol; UA uric acid