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. Author manuscript; available in PMC: 2015 Oct 1.
Published in final edited form as: Am J Kidney Dis. 2014 Apr 30;64(4):600–607. doi: 10.1053/j.ajkd.2014.03.016

Table 3.

Accuracy of traditional and newly developed self-reported function thresholds for meeting frailty criteria in validation cohort.

Measure Traditional* Modified**

Overall Men Women Overall Men Women

Sensitivity 88 (82 – 94) 82.5 (73 – 92) 93 (86 – 100) 73 (65 – 82) 65 (53 – 77) 82 (72 – 92)

Specificity 63 (57 – 69) 69 (62 – 76) 55 (45 – 65) 89 (85 – 93) 88 (83 – 93) 90 (84 – 96)

PPV 52 (45 – 59) 50 (40 – 60) 54 (44 – 64) 75 (67 – 83) 67 (55 – 80) 82 (72 – 92)

NPV 92 (88 – 96) 91 (86.2 – 96.5) 93 (86 – 100) 88 (84 – 92) 87 (82 – 92) 90 (84 – 96)

Accuracy 71 (64 – 78) 73 (65 – 81) 69 (57 – 81) 84 (79 – 89) 82 (76 – 88) 87 (80 – 94)

Note: Numbers in parentheses are 95% confidence intervals.

Abbreviations: PPV, positive predictive value; NPV, negative predictive

*

Physical Function score < 75 = 2 points.

**

Physical Function score >78 = 0 points; 13–78 = 1 point; <13 = 2 points.