Table 3.
Unadjusted and Adjusted Association of SBII with Moderate-to-High Cardiovascular Risk in Different Models
| SBII Quartiles | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) |
|---|---|---|---|---|
| Model 0 | Model 1 | Model 2 | Model 3 | |
| First | 1 | 1 | 1 | 1 |
| Second | 2.56 (0.97–6.72) | 2.29 (0.85–6.15) | 3.22 (0.98–10.51) | 3.15 (0.93–10.69) |
| Third | 3.24 (1.22–8.63)a | 3.01 (1.12–8.12)a | 6.34 (1.14–35.17)a | 6.28 (1.10–36.04)a |
| Fourth | 5.54 (1.98–15.52)b | 4.53 (1.55–13.25)b | 12.98 (1.44–116.8)a | 11.78 (1.25–111.38)a |
Notes: Model 1 covariates included BMI and excessive daytime sleepiness; Model 2 included AHI, LSpO2, and T90 plus all covariates in model 1; Model 3 included endothelial dysfunction and insulin resistance plus all covariates in model 2; a<0.05; b<0.01.
Abbreviations: SBII, sleep breathing impairment index; AHI, apnea-hypopnea index; LSpO2, lowest oxygen saturation by pulse oximetry; T90, percent of time spent with SpO2 below 90%.