Table 1.
Comparisons of baseline parameters between patients who completed the 12-month carotid IMT study and those who did not
| Completed study (n = 50) | Did not complete study (n = 50) | P value | |
|---|---|---|---|
| Male/Female | 41/9 | 43/7 | 0.786 |
| Age (yrs) | 49.5 (1.4) | 47.8 (1.7) | 0.417 |
| Body mass index (kg/m²) | 28.1 (0.6) | 28.2 (0.7) | 0.954 |
| Neck circumference (cm) | 39.6 (0.5) | 39.4 (0.5) | 0.703 |
| Systolic blood pressure (mmHg) | 140.3 (3.1) | 136.5 (3.1) | 0.384 |
| Diastolic blood pressure (mmHg) | 80.6 (1.8) | 79.8 (1.9) | 0.749 |
| Waist circumference (cm) | 96.8 (1.6) | 98.0 (1.7) | 0.611 |
| Hip circumference (cm) | 101.6 (1.3) | 102.6 (1.4) | 0.602 |
| Smoking status | |||
| Non smoker | 33 | 36 | 0.666 |
| Smoker | 17 | 14 | |
| Alcoholic consumption | |||
| Non drinker | 23 | 21 | 0.840 |
| Drinker | 27 | 29 | |
| ESS (0-24) | 13.1 (0.7) | 12.7 (0.6) | 0.663 |
| Congestive Heart Failure | |||
| Yes | 3 | 0 | 0.242 |
| No | 47 | 50 | |
| Diabetes | |||
| Yes | 6 | 8 | 0.774 |
| No | 44 | 42 | |
| Hypertension | |||
| Yes | 23 | 18 | 0.416 |
| No | 27 | 32 | |
| Carotid plaque in baseline study | |||
| Yes | 12 | 10 | 0.810 |
| No | 38 | 40 | |
| AHI (events per hr) | 37.7 (3.0) | 38.5 (3.4) | 0.854 |
| REM-AHI (events per hr) | 35.9 (4.3) | 33.1 (4.3) | 0.652 |
| Non-REM-AHI (events per hr) | 37.8 (3.1) | 38.6 (3.5) | 0.878 |
| Minimum SaO2 (%) | 74.7 (2.2) | 76.7 (2.2) | 0.530 |
| Mean SaO2 (%) | 93.0 (0.6) | 93.0 (0.6) | 0.980 |
| Arousal index (per hr of sleep) | 29.3 (2.0) | 28.8 (2.2) | 0.857 |
| Percentage of sleep time with SaO2<90% | 13.7 (3.1) | 7.5 (1.6) | 0.081 |
| Snoring/TST (%) | 14.2 (3.9) | 23.7 (4.0) | 0.102 |
| Sleep efficiency (%) | 83.4 (1.5) | 79.9 (1.8) | 0.141 |
| Mean Carotid IMT (micron) | 758.6 (20) | 742.6 (20) | 0.573 |
Data expressed as mean (SE). TST = total sleep time