Table 1.
Comparison of Baseline Data on BASC Subjects Included and Not Included in Current Study
| Variable |
Study participants |
Comparison | |
|---|---|---|---|
| Included | Not included | ||
| (n = 129) | (n = 127) | ||
| Age at entry, y | 63.9 ±8.9 | 66.4 ± 9.4 | t = 2.24, P = 0.026 |
| Men, % | 39.5 | 25.2 | χ2 = 6.00, P = 0.014 |
| College degree, % | 62.2 | 37.8 | χ2 = 1.15, P = 0.283 |
| Married or cohabiting, % | 68.4 | 31.6 | χ2 = 2.65, P = 0.104 |
| TST, mina | 398.9 ± 81.1 | 376.2 ± 83.8 | t = 2.04, P = 0.043 |
| Sleep latency, mina | 29.6 ± 41.7 | 45.7 ± 46.8 | t = 2.65, P = 0.009 |
| Awakenings per night, no.a | 2.2 ± 1.3 | 2.4 ± 1.4 | t = 0.67, P = 0.500 |
| Blood pressure | |||
| Systolic | 137.0 ±18.8 | 140.4 ± 20.1 | t = 1.18, P = 0.240 |
| Diastolic | 80.2 ± 11.5 | 80.5 ± 10.3 | t = 0.18, P = 0.856 |
| Using cardiovascular medications, % | 16.3 | 26.8 | χ2 = 4.18, P = 0.041 |
| Apnea Hypopnea Indexb | 4.2 ± 8.3 | 4.7 ± 11.1 | t = 0.34, P = 0.733 |
Data are presented as mean ± SD unless otherwise indicated. TST refers to total sleep time.
a
By history.
b
Oxygen saturation was not measured during baseline sleep study.