Table 4. Comparison between the studied cases according to perioperative laboratory investigations.

SD: standard deviation, t: Student's t-test, p: p-value for comparing between studied groups, HCT: hematocrit value, Hb: hemoglobin

Variables	Group 1 (n = 35)	Group 2 (n = 35)	Test of Sig.	P-value
Hb pre
Range	10.8–15.5	11.4–15.8	t = 1.938	0.057
Mean ± SD	13.34 ± 1.14	12.8 ± 1.19
Hb post
Range	10.1–14.4	10.3–14.2	t = 2.733	0.008
Mean ± SD	12.6 ± 1.1	11.85 ± 1.19
P(t1)	<0.001	<0.001
Creatinine pre
Range	0.45–2.05	0.45–3.2	t = 1.903	0.061
Mean ± SD	1.22 ± 0.42	1.43 ± 0.53
Creatinine post
Range	0.6 – 2.3	0.5–1.4	t = 0.039	0.969
Mean ± SD	1.16 ± 0.38	1.16 ± 0.19
P(t1)	0.170	0.003
HCT pre
Range	33–44	32–48	t = 1.898	0.062
Mean ± SD	38.2 ± 2.77	36.65 ± 3.96
HCT post
Range	31.8–42	30–43	t = 2.226	0.029
Mean ± SD	36.57 ± 2.72	34.89 ± 3.52
P(t1)	<0.001	<0.001