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%
Table 4: Comparison of spirometric tests using FEV1 and FEV0.75.
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