Table 2:
Agreement in awake wear time relative to sleep log-assisted visual analysis; validation subsample (1402 days from 307 women)
| Tracy original | Tracy VA | Tracy VM | McVeigh original | McVeigh VA | McVeigh VM | |
|---|---|---|---|---|---|---|
| Day-level agreement | ||||||
| Percent agreement, mean (sd) | 84.8 (11.7) | 85.3 (12.2) | 87.0 (11.5) | 86.3 (14.9) | 86.0 (15.0) | 90.5 (11.1) |
| Sensitivity, mean (sd) | 0.87 (0.2) | 0.85 (0.2) | 0.86 (0.2) | 0.86 (0.2) | 0.85 (0.2) | 0.92 (0.2) |
| Specificity, mean (sd) | 0.81 (0.2) | 0.86 (0.2) | 0.89 (0.1) | 0.87 (0.2) | 0.87 (0.2) | 0.87 (0.2) |
| Kappa, mean (sd) | 0.67 (0.2) | 0.69 (0.2) | 0.73 (0.2) | 0.72 (0.3) | 0.71 (0.3) | 0.80 (0.2) |
| Kappa category | ||||||
| Poor (<0.4), n (%) | 184 (13%) | 169 (12%) | 110 (8%) | 179 (13%) | 186 (13%) | 86 (6%) |
| Moderate (0.4–0.75), n (%) | 590 (42%) | 560 (40%) | 517 (37%) | 403 (29%) | 400 (29%) | 310 (22%) |
| Excellent (>0.75), n (%) | 626 (45%) | 671 (48%) | 773 (55%) | 818 (58%) | 814 (58%) | 1004 (72%) |
| Person-level agreement | ||||||
| Mean bias (hr/day), mean (sd) | −0.28 (2.5) | −1.06 (2.6) | −1.28 (2.5) | −1.00 (3.3) | −1.20 (3.4) | −0.04 (2.5) |
| 95% Limits of agreement | −4.9, 4.8 | −5.2, 5.1 | −5.0, 4.9 | −6.5, 6.5 | −6.6, 6.5 | −5.0, 4.9 |