Table 6.

Simple linear regression models of one-year change in mean sleep latency ^* (follow-up minus baseline) on change in each polysomnographic measure of sleep-disordered breathing

Polysomnographic Variable	Beta	s.e.	R2	p-value
Obstructive apnea index	−0.16	0.05	0.091	0.003
Apnea/hypopnea index	−0.09	0.03	0.121	<0.001
Respiratory disturbance index **	−0.10	0.04	0.106	0.02
Arousal index	−0.15	0.05	0.081	0.004
Minimum oxygen saturation	0.13	0.04	0.097	0.002
Percent sleep time spent with end-tidal CO2 > 50 mmHG ***	−0.01	0.01	0.012	0.31

^*on Multiple Sleep Latency Test

^**Baseline and follow-up data available for 42 AT and 13 control subjects

^***Baseline and follow-up data available for 70 AT and 22 control subjects