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%)

Billington et al.

Billington et al. BMC Family Practice 2012 13:76   doi:10.1186/1471-2296-13-76

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