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Table 1 Validity of asthma and allergy questionnaires

From: The reliability and validity of the Turkish version of the school-based asthma and allergy screening questionnaires

Asthma screening questionnaire Asthma reference test (Physician-diagnosis + PFT)
Asthma SQ (cut of point 2/3) Asthma diagnosed Not asthma Total
Asthma suspect True positive (32) False positive (43) 84
Not asthma False negative (8) True negative (56) 55
Total 40 99 139
  Sensitivity 80.0% Specificity 56.6%  
Asthma PQ (cut of point 2/3)
Asthma suspect True positive (33) False positive (23) 84
Not asthma False negative (7) True negative (76) 55
Total 40 99 139 (100.0)
  Sensitivity 82.5% Specificity 76.8%  
Allergy screening questionnaire Allergy Reference test (Physician-diagnosis +Prick test)
Allergy SQ Allergy diagnosed Not allergy Total
Allergy suspect True positive (29) False positive (28) 57
Not allergy False negative (10) True negative (55) 65
Total 39 83 122
  Sensitivity 74.4% Specificity 66.3%  
Allergy PQ
Allergy suspect True positive (33) False positive (38) 71
Not allergy False negative (6) True negative (45) 51
Total 39 83 122
  Sensitivity 84.6% Specificity 54.2%  
  1. SQ Student Questionnaire, PQ Parent / Guardian Questionnaire