Table 4.

Shows the mean values of laboratory investigations over 4-months post-operative period and their significance:

	Pre-operative	6 weeks post-operative		4 months post-operative
	Mean ± S.D.	Mean ± S.D.	P value*	Mean ± S.D.	P value**
Hemoglobin level (g/dl)	12.1 ± 1.3	10.6 ± 1.3	< 0.001$#	12.1 ± 1.2	NS
Hematocrit value	36.5 ± 3	31.8 ± 4.1	< 0.001$#	36.7 ± 2.7	NS
Blood glucose (mmol/L)	5.3 ± 0.8	5.2 ± 1	NS	4.9 ± 0.6	0.005$
Blood urea (mmol/L)	4.7 ± 1.4	3.9 ± 1.7	< 0.001$#	4.5 ± 1.2	< 0.001$#
Serum creatinine (μmol/L)	70.6 ± 15.3	58.5 ± 11.9	< 0.001$#	64.6 ± 11.9	< 0.001$#
Serum total protein (g/dl)	75.5 ± 5.1	65.6 ± 7	< 0.001$#	74.4 ± 4.4	NS
Serum albumin (g/dl)	41.8 ± 3.6	35.9 ± 3	< 0.001$#	42.3 ± 3.9	NS
Serum uric acid (mg/dl)	5.1 ± 1.5	4.6 ± 1.4	< 0.001$#	4.3 ± 1.4	< 0.001$#
Total cholesterol (mg/dl)	170.5 ± 35.8	162.4 ± 32.5	< 0.001$#	167.4 ± 35.2	NS

* Paired t-test for comparing preoperative with 6 weeks postoperative findings.

** Paired t-test for comparing preoperative with 4 months postoperative findings.

^#Significant difference at p value ≤ 0.05

^$Significant difference at p value < 0.01

^$#Significant difference at p value < 0.001