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Table 3 The mean ± SD for the pre- and post-operative measurements of the study outcomes and their paired samples t-test (N = 30)

From: Short-term outcomes of laparoscopic sleeve gastrectomy among obesity patients in the northern west bank: a retrospective records review

Variable Mean ± SD* Mean difference ± SD 95% CI of the difference** P value
Weight (Kg)     
- Pre-operative 134.68 ± 27.17    
- Post-operative 104.50 ± 26.95 30.11 ± 10.01 26.38-33.85 < 0.001
Height (meter)     
- Pre-operative 1.68 ± 0.107    
- Post-operative 1.68 ± 0.107 0 - -
BMI (kg/m2)     
- Pre-operative 47.23 ± 7.89    
- Post-operative 36.74 ± 7.74 10.49 ± 4.43 8.83-12.14 < 0.001
Systole (mg Hg)     
- Pre-operative 131.13 ± 16.84    
- Post-operative 117.83 ± 7.39 13.33 ± 16.66 7.07-19.52 < 0.001
Diastole (mg Hg)     
- Pre-operative 84.73 ± 11.90    
- Post-operative 75.83 ± 7.88 8.90 ± 12.84 4.10-13.69 < 0.001
  1. *SD: Standard deviation. **95% CI: 95% confidence interval of the mean difference; BMI: Body mass index.