Table 1.

Comparison of general patient data

Indicators	Research group, n = 220	Control group, n = 100	χ2/t	P value
Sex			0.316	0.574
Male	150 (68.18)	65 (65.00)
Female	70 (31.82)	35 (35.00)
Age in yr	7.84 ± 4.14	7.53 ± 3.47	0.652	0.515
Disease type			9.913	0.194
Hernia	167 (75.91)	69 (69.00)
Polydactyly	12 (5.45)	12 (12.00)
Umbilical hernia	5 (2.27)	6 (6.00)
Hydrocele of tunica vaginalis	6 (2.73)	4 (4.00)
Varicocele	4 (1.82)	1 (1.00)
Superficial mass	22 (10.00)	8 (8.00)
Ganglion cyst	2 (0.91)	0 (0.00)
Tendonitis stenosans	2 (0.91)	0 (0.00)
Single parent			0.217	0.641
Yes	35 (15.91)	18 (18.00)
No	185 (84.09)	82 (82.00)
Family medical history			1.108	0.293
With	11 (5.00)	8 (8.00)
Without	209 (95.00)	92 (92.00)

Data are n (%) or mean ± standard deviation.