Table 1.
Comparison of clinical characteristics between the two groups
| Observation group (n=32) | Control group (n=28) | t/χ2 | P | |
|---|---|---|---|---|
| Age (years) | 41.05±7.91 | 40.35±7.19 | 0.397 | 0.692 |
| Sex | 1.361 | 0.176 | ||
| Male (n%) | 18 (56.3%) | 17 (60.7%) | ||
| Female (n%) | 14 (43.7%) | 11 (39.3%) | ||
| Body mass index | 20.7±2.28 | 20.4±2.76 | 1.808 | 0.073 |
| Smoking | 22 (68.8%) | 20 (71.4%) | 1.209 | 0.229 |
| Marital status | 0.333 | 0.739 | ||
| Married | 10 (31.3%) | 9 (32.1%) | ||
| Single | 11 (34.4%) | 8 (28.6%) | ||
| Divorced or separated | 8 (25%) | 7 (25%) | ||
| Widowed | 1 (3.1%) | 2 (7.1%) | ||
| Unknown/missing | 2 (6.2%) | 2 (7.1%) | ||
| Diabetes | 17 (53.1%) | 15 (53.6%) | 1.005 | 0.317 |
| Hypertension | 8 (25%) | 7 (25.0%) | 0.392 | 0.696 |
| Chronic obstructive pulmonary disease | 5 (15.6%) | 4 (14/3%) | 0.965 | 0.326 |
| Cardiovascular diseases | 0.867 | 0.443 | ||
| Coronary heart disease | 22 (68.8%) | 20 (71.4%) | ||
| Congenital heart disease | 5 (15.6%) | 4 (14/3%) | ||
| Arrhythmia | 2 (6.25%) | 2 (7.1%) | ||
| Aortic valve stenosis | 2 (6.2%) | 2 (7.1%) |