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Table 1 Distribution of responses to survey

From: Spirometry in chronic obstructive pulmonary disease in Norwegian general practice

Question N responses (%)
Do you request a reversibility test?
Yes 467 (74.1)
 No 160 (25.4)
 Missing 3 (0.5)
Is there significant reversibility?
 Yes 25 (4.0)
No 582 (92.4)
 Don’t know 17 (2.7)
 Missing 6 (1.0)
What is the most likely diagnosis?
 No pulmonary disorder/healthy 18 (2.9)
 Asthma 9 (1.4)
 Restrictive pulmonary disorder 26 (8.9)
COPD 512 (81.3)
 Other 10 (1.6)
 Don’t know 25 (4.0)
Which parameter(s) did you use to diagnose COPD?
 FVC 6 (1.0)
 FVC in percent of predicted 11 (1.8)
 FEV1 16 (2.5)
 FEV1 in percent of predicted 32 (5.1)
FEV1/FVC ratio 287 (45.6)
 FEV1/FVC ratio in percent of predicted 48 (7.6)
 More than one option chosen 219 (34.8)
 Missing 11 (1.8)
Which parameter(s) did you use to grade airway obstruction?
 FVC 7 (1.1)
 FVC in percent of predicted 19 (3.0)
 FEV1 113 (17.9)
FEV1 in percent of predicted 269 (42.7)
 FEV1/FVC ratio 75 (11.9)
 FEV1/FVC ratio in percent of predicted 42 (6.7)
 More than one option chosen 59 (9.4)
 Missing 46 (7.3)
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