Table 2. Participants details and comparison.
| Variable | Novice (n=12) | Intermediate (n=11) | Expert (n=10) | P |
|---|---|---|---|---|
| Male gender, number (percent) | 8 (0.67) | 6 (0.55) | 7 (0.70) | 0.735a |
| Age mean ± SD, years | 34±5.1 | 38±5.7 | 49±5.0 | <0.001b |
| Individual bronchoscopies in a clinical setting, number | 0.0±0 | 10.0±25.0 | 1,000.0±1,650.0 | <0.001c |
| Supervised bronchoscopies in a clinical setting, number | 0.0±0 | 40.0±67.0 | 45.0±97.0 | <0.001c |
| Simulated bronchoscopies, number | 0±0 | 15.0±20.0 | 7.5±11.0 | <0.001c |
| Bronchoscopies in a clinical setting within the last 12 months, number | 0±0 | 5.0±45.0 | 200.0±118.0 | <0.001c |
| Days since last performance of a bronchoscopy, days | – | 29.0±999.0 | 2.5±5.25 | <0.001d |
Values are presented as median ± interquartile range or as otherwise indicated. P was compared by Kruskal-Wallis, ANOVA, student’s independent t-test and Mann-Whitney U test for continuous variables or by χ2-test for categorical variables. a, the result of the comparison between the three groups by a χ2-test; b, the result of the comparison between the three groups by a one-way ANOVA; c, the result of the comparison between the three groups by a Kruskal-Wallis test; d, the result of the comparison between the two groups by a Mann-Whitney U test.