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Table 2 Performance of spirometry in general practice (n = 216)

From: Diagnostic accuracy of spirometry in primary care

Interpretation of flow-volume curve n (%) Bronchodilation test n (%)
Full adherence to ERS 86 (39.8) Was not necessary 138 (36.1)
Adherence to ERS but only two flow-volume curves 69 (31.9) Was necessary and performed 37 (17.1)
No adherence to ERS but first flow-volume curve perfect and showing no pathological signs 13 (6.0) Was necessary but not performed 41 (19.0)
No adherence to ERS showing no obstruction 15 (6.9)   
No adherence to ERS indicating airway obstruction 33 (15.2)