Sensitivity of different spirometric tests for detecting airway obstruction in childhood asthma

http://informahealthcare.com/doi/abs/10.3109/02770903.2014.984842


Conclusions: 
(1) Tests at low lung volumes (small airway tests) are more sensitive than large airway tests; 
(2) Within groups, the FEV₁ is better than PEFR and FEF₇₅ is better than FEF_25–75 or FEF₅₀.