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Table 3 Overall analysis of perioperative outcomes comparing stone free with not stone free after PCNL

From: Evaluation of three stone-scoring systems for predicting SFR and complications after percutaneous nephrolithotomy: a systematic review and meta-analysis

Outcome of interest

No. of studies

No.of patients

SF/NSF

OR/WMD(95%CI) a

p-value

Study heterogeneity

Chi2

df

I 2

p-value

Operative time, min

6

706/368

−19.85[−25.52,-14.18]

<0.0001

8.62

5

42%

0.13

No of tract

3

618/322

−0.03[−0.14,0.08] a

0.62

4.76

2

58%

0.09

Mean tract length

3

623/321

0.77[−2.06,3.61]

0.59

1.92

2

0%

0.38

LOS, days

6

706/368

−0.53[−0.88,-0.17]

0.003

5.00

5

0%

0.42

Transfusion rate

2

228/130

0.22[0.08,0.55] a

0.001

0.34

1

0%

0.56

Change in Hb level(g/mL)

2

228/130

−0.21[−0.55,0.13]

0.22

0.01

1

0%

0.92

  1. NS stone free, NSF not stone free, LOS length of stay, PCNL percutaneous nephrolithotomy, OR odds ratio, WMD weighted mean difference, CI confidence interval, a OR