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Table 5 Receiver Operator Characteristic (ROC) curve statistics

From: Pre-frailty factors in community-dwelling 40–75 year olds: opportunities for successful ageing

 Comparing not frail with pre-frailComparing pre-frail with frail
Factor 1
 AUC0.640.60
 95%CI0.60–0.680.53–0.66
 p< 0.010.33
 Youden index0.230.12
 threshold score> 114> 213
 Sens62.958.3
 Spec59.864.8
Factor 3
 AUC 0.65
 95%CI 0.59–0.70
 p < 0.01
 Youden index 0.37
 threshold score > 68.3
 Sens 75.0
 Sp 61.7
Factor 5
 AUC 0.63
 95%CI 0.56–0.69
 p 0.25
 Youden index 016
 threshold score > 37
 Sens 33.3
 Spec 92.2
Factor 7
 AUC0.550.61
 95%CI0.52–0.580.55–0.67
 p< 0.050.17
 Youden index0.070.16
 threshold score> 40> 40
 Sens58.975.0
 Spec48.241.0
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