Table 1 Validity of asthma and allergy 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% | ||