Table 1.
Clinical and anthropometric data for excluded and included subjects in the analysis of the PROOF-SYNAPSE studies
| Excluded volunteers in our analysis (± SD)a | Included volunteers in our analysis (± SD)a | Pb | |
|---|---|---|---|
| n | 231 | 780 | |
| Age (years) | 65.6 ± 0.8 | 65.8 ± 1.1 | 0.17 |
| Body mass index (kg/m2) | 25.0 ± 3.7 | 25.4 ± 4.0 | 0.26 |
| Epworth (/24) | 5.5 ± 3.6 | 5.5 ± 3.4 | 0.86 |
| Systolic blood pressure (mmHg) | 142.5 ± 18.7 | 143.4 ± 18.4 | 0.53 |
| Diastolic blood pressure (mmHg) | 84.7 ± 7.4 | 86.0 ± 8.5 | 0.05 |
| Alcohol intake (drink per day) | 1.6 ± 2.2 | 1.9 ± 2.2 | 0.08 |
| Women (%) | 67.8 | 57.4 | NS |
| Hypertension (%) | 27.1 | 36.7 | NS |
| Smoker (past or current (%)) | 23.7 | 25.8 | NS |
a
The original PROOF study included 1011 subjects. Of these, 847 with no previous diagnosis of sleep disordered breathing and acceptable polygraphic recording were enrolled in the current study; PPT data were not available for 67 subjects because of too many artifacts or ectopic beats on electrocardiogram.
b
P values were derived using the Mann-Whitney test.