Variable |
T1 |
T2 |
Sensitivity |
31.25 (5.41-57.09) |
75 (50.66-99.34) |
Specificity |
94.29 (88.13-100) |
78.57 (68.24-88.9) |
Positive predictive value |
55.56 (17.54- 93.57) |
44.44 (23.85-65.04) |
Negative predictive value |
85.71 (77.25- 94.18) |
93.22 (85.96-100) |
T1: spirometry with FEV1
T2: spirometry with FEV0.75
Values expressed in % (95% CI)
Prevalence of asthma in the sample: 18.6% |