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

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

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

*SD: Standard deviation. **95% CI: 95% confidence interval of the mean difference; BMI: Body mass index.