Table 9.
Reproducibility of the model for detecting imminent precursors using the faller data set. Five independent experiments were conducted for the learning and testing steps to identify imminent precursors of falls among all fallers and among fallers who were shot-term patients.
| Group and statistic | Experiment | Mean (SD) | |||||
|
|
1 | 2 | 3 | 4 | 5 |
|
|
| Fallers |
|
||||||
|
|
Area under the curve | 0.562 | 0.576 | 0.568 | 0.566 | 0.564 | 0.567 (0.005) |
|
|
Sensitivity (95% CI) | 0.563 (0.546-0.581) |
0.543 (0.526-0.560) |
0.611 (0.593-0.630) |
0.576 (0.559-0.594) |
0.536 (0.519-0.553) |
0.566 (0.030) |
|
|
Specificity (95% CI) | 0.514 (0.509-0.520) |
0.576 (0.571-0.582) |
0.477 (0.472-0.482) |
0.517 (0.512-0.522) |
0.558 (0.552-0.563) |
0.529 (0.039) |
|
|
Odds ratio (95% CI) | 1.37 (1.20-1.56) |
1.62 (1.42-1.84) |
1.43 (1.25-1.64) |
1.46 (1.27-1.66) |
1.45 (1.27-1.66) |
1.47 (0.09) |
| Fallers who were short-term patients |
|
||||||
|
|
Area under the curve | 0.613 | 0.607 | 0.595 | 0.602 | 0.618 | 0.607 (0.009) |
|
|
Sensitivity (95% CI) | 0.547 (0.522-0.572) |
0.649 (0.621-0.677) |
0.492 (0.470-0.515) |
0.607 (0.581-0.635) |
0.623 (0.596-0.651) |
0.584 (0.063) |
|
|
Specificity (95% CI) | 0.626 (0.613-0.641) |
0.524 (0.512-0.536) |
0.653 (0.639-0.668) |
0.548 (0.535-0.560) |
0.560 (0.547-0.573) |
0.582 (0.055) |
|
|
Odds ratio (95% CI) | 2.02 (1.64-2.49) |
2.03 (1.64-2.51) |
1.83 (1.48-2.25) |
1.87 (1.52-2.31) |
2.10 (1.70-2.59) |
1.97 (0.12) |