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Table 3 Positive (LR+) and negative (LR−) likelihood ratios and their corresponding effect on posttest probability according to Jaeschke et al. [21]

From: Diagnostic accuracy of arthroscopic biopsy in periprosthetic infections of the hip

LR+ LR− Effect on posttest probability
>10 <0.1 Large
5–10 0.1–0.2 Moderate
2–5 0.2–0.5 Small
1–2 0.5–1 Marginal
1 1 No change