Table 3. Multivariable Linear Regression Analysis With Stepwise Backward Selection of Contact Lens Variables and the Set of Covariatesa.
| Covariates | β (95% CI) | P Value |
|---|---|---|
| Night bursts OPF SD (per unit) | 0.027 (0.004 to 0.051) | .02b |
| Night bursts OPA SD (per 0.1 U) | 19.739 (1.333 to 38.145) | .04b |
| No. of long peaks sleep (per unit) | 0.036 (0.005 to 0.067) | .02b |
| Mean peak ratio wake (per 10 U) | −0.021 (−0.04 to −0.003) | .02b |
| OPA SD (per 0.01 U) | −1.928 (−3.771 to −0.084) | .04 |
| Age (per decade) | −0.028 (−0.064 to 0.008) | .13 |
| Baseline MD (per dB) | 0.034 (0.028 to 0.040) | <.001b |
| Laser | −0.042 (−0.133 to 0.050) | .37 |
| Medications | −0.032 (−0.053 to −0.011) | .003b |
| Surgery | 0.006 (−0.078 to 0.090) | .90 |
Abbreviations: MD, mean deviation; OPA, ocular pulse amplitude; OPF, ocular pulse frequency.
a
Akaike information criterion, 506.5; adjusted R2 = 30.1%. The covariates laser, surgery, medications, age, and baseline MD are set as locked terms. The dependent variable is the MD slope in decibels per year.
b
Significant after Benjamini-Hochberg procedure.