Significant factors of the subclinical hypothyroidism, multiple logistic regression analysis (Backward Stepwise, step 12)
| β coefficient | Standard error | Wald | p-value | Exp(β) | 95% confidence interval for Exp(β) | |
| Sex (reference: female) | −1.029 | 0.454 | 5.136 | 0.023 | 0.358 | 0.147–0.87 |
| Min SpO2 | 0.105 | 0.039 | 7.305 | 0.007 | 1.111 | 1.029–1.199 |
| ODI | 0.052 | 0.018 | 8.108 | 0.004 | 1.053 | 1.016–1.092 |
| Constant | −7.704 | 3.457 | 4.966 | 0.026 | 0 |
Dependent variable: subclinical hypothyroidism; Nagelkerke R2=0.288. SpO2: oxygen saturation measured by pulse oximetry; ODI: oxygen desaturation index.