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Table 3 MS-Q questionnaire validity properties being the diagnosis of reference that obtained according to clinical judgment -IHS in overall and by gender samples.

From: New uses of the Migraine Screen Questionnaire (MS-Q): validation in the Primary Care setting and ability to detect hidden migraine. MS-Q in Primary Care

In the overall sample, according to IHS criteria

Validity of MS-Q questionnaire

 

Kappa

Sensitivity

Specificity

PPV

NPV

PPR

NPR

Overall

       

Original database

(N = 8.073)

0.82*

0.82 (0.81 - 0.84)

0.97 (0.97 - 0.97)

0.90 (0.89 - 0.91)

0.94 (0.94 - 0.95)

27.66 (23.93 - 31.97)

0.18 (0.17 - 0.20)

Depurated database

(N = 7.528)

0.84*

0.82 (0.81 -- 0.84)

0.98 (0.98 - 0.99)

0.95 (0.94 -- 0.96)

0.94 (0.93 - 0.95)

49.00 (40.02 -- 60.01)

0.18 (0.16 - 0.20)

Gender

       

Male

(N = 3.076)

0.79*

0.77 (0.73 - 0.81)

0.98 (0.98 - 0.99)

0.88 (0.85 - 0.91)

0.96

(0.94 --0.95)

44.08 (32.85 -- 59.16)

0.24 (0.20 -- 0.28)

Female

(N = 4.997)

0.82*

0.84 (0.82 -0.86)

0.96 (0.95 - 0.97)

0.91

(0.89 - 0.92)

0.94 (0.93 - 0.95)

21.32 (18.06 - 25.17)

0.17 (0.15 - 0.19)

  1. PPV: Positive Predictive Value; NPV: Negative Predictive Value; PPR: Positive Probability Ratio; NPR: Negative Probability Ratio. * p < 0.001