Table 1.
Basic characters comparison between subclinical hypothyroidism and control group
| ScHT (N = 168) | Control (N = 951) | P value | |
|---|---|---|---|
| Age | 39.2 ± 7.6 | 38.5 ± 7.7 | 0.548 |
| Height | 158.2 ± 4.8 | 158.9 ± 5.2 | 0.416 |
| Weight | 55.3 ± 8.1 | 54.7 ± 6.6 | 0.561 |
| BMI | 22.1 ± 3.0 | 21.7 ± 2.4 | 0.304 |
| fT3 | 5.0 ± 0.6 | 5.0 ± 0.7 | 0.999 |
| fT4 | 16.4 ± 2.1 | 17.1 ± 2.2 | 0.045 |
| Systolic pressure | 109.6 ± 15.7 | 108.6 ± 13.1 | 0.631 |
| Diastolic pressure | 69.9 ± 10.2 | 69.0 ± 8.9 | 0.500 |
| TSH | 5.4(4.7, 6.5) | 2.3(1.7, 2.9) | <0.001 |
| TPOab | 9.0(5.2, 41.5) | 7.9(5.2,13.1) | 0.124 |
| Tgab | 19.6(14.9, 149.9) | 17.9(13.8,23.5) | 0.022 |
| Hypertension (Y/N) | 12/156 (7.14%) | 47/904 (4.94%) | 0.259 |
| Diabetes (Y/N) | 6/162 (3.57%) | 32/919 (3.36%) | 0.819 |
| Hashimoto Thyroiditis (Y/N) | 24/144 (14.28%) | 50/901 (5.25%) | <0.001 |
| Perimenopause (Y/N) | 24/144 (14.28%) | 201/750 (21.14%) | 0.047 |
| Menopause (Y/N) | 6/162 (3.57%) | 28/923(2.94%) | 0.627 |
| Smoking | 0.603 | ||
| Never | 168 (100%) | 944 (99.26%) | |
| Current | 0 | 7 | |
| Alcohol consumption | 0.446 | ||
| Never | 162 (96.43%) | 900 (94.64%) | |
| Rarely | 6 (3.57%) | 51 (5.36%) | |
| Marital status | 0.016 | ||
| Married | 168 (100%) | 921 (96.85%) | |
| Unmarried | 0 | 30 (3.15%) | |
| Education status | 0.401 | ||
| ≤ Middle School | 81 (48.21%) | 423 (44.48%) | |
| ≥ University | 87 (51.79%) | 528 (55.52%) | |
| Income (RMB/year) | 0.607 | ||
| ≤ 40,000 | 30 (17.86%) | 207 (21.77%) | |
| 40,000–100,000 | 132 (78.57%) | 693 (72.87%) | |
| ≥ 100,000 | 6 (3.57%) | 51 (5.36%) | |
| Physical activity | 0.552 | ||
| No | 36 (21.43%) | 174 (18.30%) | |
| Rarely | 45 (26.79%) | 276 (29.02%) | |
| Frequently | 87 (51.79%) | 501 (52.68%) | |
| Depression status | 0.727 | ||
| No | 132 (78.57%) | 774 (81.39%) | |
| Light | 33 (19.64%) | 147 (15.46%) | |
| Medium | 3 (1.79%) | 30 (3.15%) | |
| Severe | 0 | 0 | |
| Paritya | 1 (1,1) | 1 (1,1) | 0.162 |
ScHT subclinical hypothyroidism, fT3 free triiodothyronine, fT4 free thyroxine, BMI body mass index
P < 0.05 shows significant difference
aCompared by U-test