Table 1. Demographic characteristics
| Character | Pre-I (n=26) | Post-I (n=168) | p-value* |
| Sex | | | |
| Male | 21 (80.8) | 142 (84.5) | 0.158† |
| Female | 5 (19.2) | 26 (15.5) | |
| BMI | 27.9±6.8 | 28.2±5.0 | 0.469‡ |
| Age | 47.3±16.6 | 49.6±12.7 | 0.240‡ |
| AHI | 52.8±40.2 | 50.5±31.0 | 0.221‡ |
| Diabetic mellitus | 2 (7.7) | 16 (9.5) | 0.706† |
| Hypertension | 10 (38.5) | 58 (34.5) | 0.665† |
| Hyperlipidemia | 2 (7.7) | 8 (4.8) | 0.387† |
| CVD | 2 (7.7) | 16 (9.5) | 1.000† |
| CVA | 2 (7.7) | 3 (1.8) | 0.270† |
| ESS | 10.0±5.5 | 9.1±4.6 | 0.403‡ |
| Total sleep time (min) | 333.0±93.7 | 325.6±81.0 | 0.704‡ |
| NREM sleep (%) | 83.4±8.9 | 81.5±9.4 | 0.313‡ |
| Sleep latency (min) | 9.9±12.8 | 8.3±8.7 | 0.551‡ |
| Sleep efficiency (min) | 77.6±14.6 | 81.0±13.3 | 0.272‡ |
| Arousal index (/hr) | 60.5±37.7 | 55.8±26.1 | 0.544‡ |
| Minimal saturation (%) | 75.8±9.5 | 75.8±10.4 | 0.999‡ |
| Longest apnea (sec) | 50.3±24.8 | 51.5±25.6 | 0.810‡ |
| PLMI (/hr) | 1.1±3.2 | 1.1±4.7 | 0.996‡ |
Values are presented as mean±SD or n (%).
p<0.05,
Chi-square test,
Independent t-test.
Pre-I: pre-insurance, Post-I: post-insurance, BMI: body mass index, AHI: apnea-hypopnea index, CVD: cardiovascular disease, CVA: cerebrovascular accident, ESS: Epworth sleepinesss scale, NREM: non-rapid eye movement, PLMI: periodic limbic movement index.