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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

 

2012

2013

2014

2015

2016

2017

2018

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)