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Table 3 Correlation analysis results (overall, by sex and age groups)

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 correlationp-valueN
Male− 0.2440.13439
Less than 40 years old0.0370.83733
40 years old and higher0.2820.11732
  1. aMarks a significant correlation at 99% confidence interval