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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

From: Diagnostic accuracy of the STRATIFY clinical prediction rule for falls: A systematic review and meta-analysis

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%)