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Table 3 Summary of agreement and predictive accuracy statistics for objective vs self-report measures

From: Agreement between standard and self-reported assessments of physical frailty syndrome and its components in a registry of community-dwelling older adults

Measures Compared

Percent Agreement

Kappa Coefficient (95%CI)

Sensitivity

Specificity

PPV

NPV

Objective Slowness vs. Walking Question 1 (Static)

77.9%

0.34 (0.16, 0.52)

31%

97%

80%

78%

Objective Slowness vs. Walking Question 2 (Static)

82.4%

0.54 (0.40, 0.69)

60%

92%

74%

85%

Objective Slowness vs. Walking Questions 1 and 2 Combined (Static)

82.3

0.56 (0.38, 0.74)

65%

89%

71%

86%

Objective Slowness vs. Walking Question 3 (Dynamic)

77.5%

0.47 (0.33, 0.61)

67%

82%

59%

86%

Objective Slowness vs. Walking Questions 1–3 Combined

77.9%

0.51 (0.38, 0.65)

81%

77%

58%

91%

Objective Weakness vs. Grip Question 4 (Static)

63.2%

0.16 (-0.00, 0.32)

29%

85%

57%

65%

Objective Weakness vs. Grip Question 5 (Static)

56.0%

0.13 (-0.01, 0.27)

61%

53%

46%

67%

Objective Weakness vs. Grip Questions 4 and 5 Combined (Static)

55.5%

0.13 (-0.01, 0.27)

65%

49%

46%

68%

Objective Weakness vs. Grip Question 6 (Dynamic)

63.5%

0.21 (0.05, 0.36)

45%

75%

54%

68%

Objective Weakness vs. Grip Questions 4–6 Combined

51.9%

0.10 (-0.04, 0.23)

72%

39%

43%

68%

  1. Bolded text = highest value per column, per category (slowness, weakness)
  2. Abbreviations: 95%CI 95% confidence interval, PPV Positive Predictive Value, NPV Negative Predictive Value