Table 3.
Multiple linear regression with mean nocturnal oxygen saturation (%) as dependent variable (adjusted r2 = 47.0%).
| Mean Oxygen Saturation | |||
|---|---|---|---|
| Coefficient | 95% CI | P | |
| Wheeze | −0.36 | −0.60, −0.13 | < .01 |
| FEV1 (% of predicted, by 10) | 0.08 | 0.02, 0.14 | < .01 |
| Female | 1.11 | 0.94, 1.29 | < .01 |
| Age (by 5) | −0.24 | −0.28, −0.20 | < .01 |
| BMI (by 5) | −0.48 | −0.58, −0.37 | < .01 |
| Nocturnal gastroesophageal reflux | −0.41 | −0.70, −0.13 | < .01 |
| Nasal obstruction at night | 0.09 | −0.29, 0.47 | .64 |
| AHI (by 10) | −0.19 | −0.26, −0.13 | < .01 |
Adjusted for smoking history and all variables in the table. AHI = apnea-hypopnea index, BMI = body mass index, CI = confidence interval, FEV1 = forced expiratory volume in 1 second.