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Table 4 Sensitivity and specificity of each cut-off value for the risk score for low back pain with the inclusion of the Thai ERIQ

From: Development of a risk score for low back pain in office workers - a cross-sectional study

Cut-off value Sensitivity Specificity PPV NPV
≥ 1 100.0 2.1 56.2 100.0
≥ 2 98.4 11.7 58.3 85.0
≥ 3 90.7 28.3 61.3 70.7
≥ 4 83.5 48.3 60.0 70.0
≥ 5 74.2 63.4 71.8 66.2
≥ 6 51.6 78.6 75.2 56.4
≥ 7 30.2 91.0 80.9 51.0
≥ 8 22.5 95.2 85.4 49.5
≥ 9 8.2 97.9 83.3 46.0
≥ 10 3.3 100.0 100.0 45.2
≥ 11 2.2 100.0 100.0 44.9