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Table 1 Demographics of responders and non-responders in an observational research bronchoscopy study

From: Motivation and response rates in bronchoscopy studies

Variable Responders n = 235 Non-responders p-* p**
Initial, n = 139 Late, n = 88
Age (SD) 66.9 (7.6) 67.9 (8.0) 67.4 (7.5) 0.3 0.6
Sex 0.01 0.5
 Women (%) 42.6 56.1 51.1   
 Men (%) 57.4 43.9 48.9   
Study category 0.2 0.06
 Controls (%) 43.0 41.7 29.6   
 Obstructive lung disease (%) 57.0 58.3 70.4   
  1. *Difference between responders and all non-responders
  2. **Difference between initial and late non-responders