From: Agreement between self-reported asthma symptoms and exhaled nitric oxide levels: impact on inhaled corticosteroid prescribing in general practice. An observational study
FeNO * ACT correlation
p-value
N
Overall
0.195
0.120
65
Male
− 0.244
0.134
39
Female
0.539a
0.004
26
Less than 40 years old
0.037
0.837
33
40 years old and higher
0.282
0.117
32