Table 1.
Sample Characteristics at Baseline
| Variable | Total (N=134) | AHI < 5 (No SDB) (N=39) | 5 ≥ AHI < 15 (Mild SDB) (N=95) | p value |
|---|---|---|---|---|
| Age: mean (SD) | 72.2 (7.7) | 72.0 (6.4) | 71.9 (7.9) | 0.94 |
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| Gender (Male) (%) | 97.0 (130) | 97.4 (38) | 96.8 (92) | > .99 |
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| Race (Non-Hispanic White) (%) | 78.4 (105) | 79.6 (30) | 78.9 (75) | 0.820 |
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| Education (%) | 0.71 | |||
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| Less than High School | 6 (4.5) | 2 (5.1) | 4 (4.2) | |
| High School Graduate | 19 (14.2) | 7 (17.9) | 12 (12.6) | |
| Some College | 60 (44.8) | 14 (35.9) | 46 (48.4) | |
| College Graduate | 25 (18.7) | 8 (20.5) | 17 (17.9) | |
| Post Baccalaureate | 24 (17.9) | 8 (20.5) | 16 (16.8) | |
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| Marital Status (%) | 0.35 | |||
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| Married | 59 (44.0) | 15 (38.5) | 44 (46.3) | |
| Living as Married | 11 (8.2) | 3 (7.7) | 8 (8.4) | |
| Divorced/Separated | 42 (31.3) | 11 (28.2) | 31 (32.6) | |
| Widowed | 9 (6.7) | 3 (7.7) | 6 (6.3) | |
| Single/Never Married | 13 (9.7) | 7 (17.9) | 6 (6.3) | |
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| AHI: mean (SD) | 9.4 (5.3) | 2.4 (1.5) | 10.1 (3.0) | <.01 |
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| PSQI total score: mean (SD) | 9.1 (3.4) | 8.4 (3.6) | 9.2 (3.5) | 0.28 |
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| Epworth Sleepiness Scale score: mean (SD) | 5.1 (3.7) | 4.6 (3.3) | 5.2 (3.8) | 0.43 |
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| PHQ9: mean (SD) | 4.8 (4.3) | 4.5 (4.8) | 4.8 (4.0) | 0.66 |
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| History of hypertension (%) | 87 (64.9) | 26 (66.7) | 61 (64.2) | 0.84 |
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| History of stroke (%) | 8 (6.0) | 1 (2.6) | 7 (7.4) | 0.44 |
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|
History of heart attack (%)
|
19 (14.2) | 6 (15.4) | 13 (13.7) | 0.79 |
|
Weight: mean (SD)
|
185.4 (32.0) | 180.9 (31.9) | 187.3 (32.0) | 0.29 |
| Geriatric Pain Measure: mean (SD) | 14.7 (11.4) | 16.0 (11.8) | 14.2 (11.3) | 0.40 |
AHI=apnea-hypopnea index; PSQI=Pittsburgh Sleep Quality Index; PHQ9=Patient Health Questionnaire-9. Statistical analysis: t-tests for continuous variables and Fisher’s Exact tests for categorical variables