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Table 4 Hemoglobin and creatinine levels of patient before and after surgery

From: Safety and efficacy of mini-percutaneous nephrolithotomy as daycare procedure: a prospective observational study

  Parameters Mean N SD Std. Error mean P value
Pair 1 Pre-op Hb 12.766 35 2.0716 0.3502 0.0001
Post-op Hb 12.4571 35 1.90484 0.32198
Pair 2 Pre-op Creatinine 1.2546 35 1.26149 0.21323 0.060
Post-op serum creatinine 1.1057 35 0.86158 0.14563