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Table 1 Characteristics of studied groups

From: Laparoscopic adrenalectomy - is it safe in hands of residents in training?

Parameter All Group 1 (surgical residents) Group 2 (attending surgeons) p value
Number of patients, n (%) 300 54 246
Females, n (%) 181 (60.33%) 29 (53.70%) 152 (61.79%) 0.2715
males, n (%) 119 (39.67%) 25 (46.30%) 94 (38.21%)
Mean age (years, ± SD) 57.72 ± 13.10 58.74 ± 12.12 57.50 ± 13.32 0.5352
Mean BMI (kg/m2, ± SD) 28.19 ± 5.44 28.02 ± 4.65 28.23 ± 5.60 0.8062
Mean size (cm, ± SD) 4.50 ± 2.17 4.26 ± 1.96 4.55 ± 2.22 0.3881
Side of the procedure
 -right 150 28 122 0.7638
 -left 150 26 124
Type of the tumor
 -hormonally inactive 144 23 121 0.7238
 -catecholamine-secreting 58 11 47
 -glucocorticosteroid-secreting 30 5 25
 -aldosterone-producing 21 6 15
 -virilizing 3 0 3
 -cancer or metastasis 44 9 35