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Table 1 Demographic and clinical variables of patients

From: Comparison of absorbed irrigation fluid volumes during retrograde intrarenal surgery and percutaneous nephrolithotomy for the treatment of kidney stones larger than 2 cm

 

RIRS (30)

PCNL (30)

p value

Mean age

48.6 ± 15

53.2 ± 15

0.25

Sex (male/female)

12/18

14/16

0.79

Mean body mass index (kg/m2)

28.8 ± 4.7

28.8 ± 3.8

0.99

Stone size (cm)

3.10 ± 1.5

3.33 ± 1.3

0.37

Mean operation time (min)

107.2 ± 38

78.3 ± 52

0.001

Irrigation fluid volume (mL)

2571 ± 1213

9866 ± 8691

<0.0001

Absorbed fluid amount (mL)

133.1 ± 137

90.9 ± 90

0.25

Fluoroscopy screening time (s)

17.8

194.1

<0.0001

Postop stay (day)

1

3.9

<0.0001