Table 3.
Post-test probability of a fall in patients classified as high risk (≥2 points) and low risk (<2 points) using the STRATIFY score
| Application of STRATIFY rule | Pre test probability (%) | + LR (95% CI) | Post test probability (%) + LR | -LR (95% CI) | Post test probability (%) -LR |
|---|---|---|---|---|---|
|
All studies |
6.27% (5.84%-6.74%) |
1.58 (1.34-1.86) |
9.58% (8.26%-11.09%) |
0.57 (0.43-0.75) |
3.67% (2.8%-5.03%) |
|
Studies with spectrum bias excluded |
5.93% (5.51%-6.39%) |
1.67 (1.43-1.95) |
9.53% (8.29%-10.93%) |
0.56 (0.45-0.71) |
3.44% (2.75%-4.29%) |
|
Studies with no definition ‘fall’ excluded |
11.9% (10.96%-12.92%) |
1.76 (1.48-2.12) |
19.27% (16.62%-22.24%) |
0.59 (0.41-0.85) |
7.4% 5.25%-10.32% |
|
Studies with a high prevalence of falls (>10%) |
24.41% (22.24%-26.68%) |
1.39 (1.21-1.60) |
30.98% (28.08%-34.03%) |
0.72 (0.59-0.87) |
18.82% (15.99%-22.03%) |
| Studies with a low prevalence of falls (<10%) | 3.57% (3.22%-3.95%) | 2.03 (1.69-2.44) | 6.99% (5.89%-8.28%) | 0.39 (0.18-0.86) | 1.42% (0.65%-3.08%) |