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Table 2 Positive screening rate of ventilatory defects

From: Safety and use of pulmonary function tests: a retrospective study from a single center over seven years’ clinical practice

 2012201320142015201620172018
Total (%)5629 (100)5761 (100)6972 (100)8589 (100)10,501 (100)12,912 (100)15,547 (100)
Normal (%)2822 (50.1)2370 (41.1)2567 (36.8)3535 (41.2)4518 (43.0)5335 (41.3)6433 (41.4)
Obstructive abnormalities (%)2083 (37.0)2554 (44.3)3267 (46.9)3624 (42.2)4336 (41.3)5452 (42.2)6666 (42.9)
Mixed abnormalities (%)457 (8.1)492 (8.5)691 (9.9)883 (10.3)975 (9.3)1266 (9.8)1489 (9.6)
Restrictive abnormalities (%)267 (4.7)345 (6.0)447 (6.4)547 (6.4)672 (6.4)859 (6.7)959 (6.2)
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