Table 2.
Linear regression models examining the impact of GERD on sleep quality, while controlling for the impact of various covariates.
| Minimally Adjusted | Fully Adjusted | |||||
|---|---|---|---|---|---|---|
| β (95% CI) | R2 | P | β (95% CI) | R2 | P | |
| N1 sleep (%) | −0.67 (−2.63 to 1.30) | .183 | .51 | −0.37 (−2.09 to 1.34) | .392 | .67 |
| N2 sleep (%) | 0.88 (−0.91 to 2.66) | .014 | .34 | 0.48 (−1.22 to 2.18) | .118 | .58 |
| N3 sleep (%) | 1.55 (0.24 to 2.87) | .172 | .021* | 1.46 (0.15 to 2.77) | .192 | .03* |
| REM sleep (%) | −1.67 (−2.68 to −0.65) | .071 | .001* | −1.40 (−2.40 to −0.41) | .132 | .006* |
| Sleep efficiency (%) | −3.67 (−6.00 to −1.36) | .165 | .002* | −3.01 (−5.33 to −0.77) | .197 | .009* |
| Wake after sleep onset (minutes) | 9.08 (1.07 to 17.10) | .169 | .026* | 8.77 (0.80 to 16.73) | .191 | .031* |
| Sleep onset latency (minutes) | 4.34 (0.29 to 8.39) | .022 | .036* | 2.81 (−1.23 to 6.85) | .044 | .17 |
| REM latency (minutes) | 27.15 (15.82 to 38.49) | .023 | < .001* | 24.43 (13.25 to 35.61) | .061 | < .001* |
| Total sleep time (minutes) | −16.75 (−27.34 to −6.17) | .172 | .002* | −13.41 (−23.87 to −2.95) | .205 | .012* |
| Arousal index | −0.53 (−2.66 to 1.60) | .122 | .63 | 0.13 (−1.59 to 1.85) | .438 | .88 |
Minimally adjusted model: covariates include age, sex, BMI. Fully adjusted model: covariates include age, sex, BMI, AHI, periodic limb movements, insomnia, depression, neuropathic pain, and fibromyalgia. *P < .05. CI = confidence interval, REM = rapid eye movement.