Table 1.

Comparison of baseline characteristics

Characteristic	Cases (n=198)	Controls (n=594)	p-value
Median age in years	47.5 (IQR: 32–61)	47 (IQR: 32–59.5)	0.87*
Male sex	98 (49.5%)	294 (49.5%)	0.90**
Smoker	38 (20.7%)	139 (23.4%)	0.44**
Diabetes mellitus	26 (13.2%)	51 (8.6%)	0.06**
Emergency setting	73 (36.9%)	236 (39.7%)	0.48**

IQR = interquartile range

*Non-parametric comparison of medians

**Pearson’s chi-squared test