Skip to main content

Table 2 Estimates of questionnaire diagnostic accuracy for different headache types

From: The burden of headache disorders in India: methodology and questionnaire validation for a community-based survey in Karnataka State

 

Any headache

Migraine

TTH

CDH

Sensitivity, % (95 % CI)

88 (83–91)

63 (52–72)

57 (48–65)

57 (48–65)

Specificity, % (95 % CI)

81 (74–87)

85 (81–89)

81 (76–86)

82 (76–86)

Positive predictive value, % (95 % CI)

89 (84–92)

55 (45–65)

61 (52–69

61 (52–69)

Negative predictive value, % (95 % CI)

80 (73–86)

89 (85–92)

79 (74–84)

79 (74–85)

Kappa value (95 % CI)

0.69 (0.61–0.76)

0.46 (0.35–0.56)

0.39 (0.29–0.49)

0.51 (0.24–0.79)

  1. Migraine and TTH include probable migraine and probable TTH, respectively