Table 1.

Demographic features of the study groups

	Case	Control	P
Age (years)	33.27±3.50	34.10±3.69	0.27
Work duration (years)	9.29±2.12	8.50±3.51	0.14
Body mass index (kg/m2)	26.49±3.80	26.83±3.73	0.65
Smoking [n (%)]	7 (8.2)	0 (0)	0.19

Data are presented as mean±standard deviation