. 2017 Aug 1;18:323. doi: 10.1186/s12891-017-1655-5

Table 2.

Post-operative haematocrit and haematocrit decline among different groups

		Frequency	Hct(post) (%)	P value	Hct decline (%)	P value
Gender	Male	375(54.6%)	34.54 ± 4.32	<0.001	9.20	<0.001
Gender	Female	312(45.4%)	30.30 ± 3.58	<0.001	7.92	<0.001
Smoking	Yes	189(27.5%)	34.70 ± 4.21	<0.001	8.85	.365
Smoking	No	498(72.5%)	31.82 ± 4.38	<0.001	8.53	.365
Alcohol Drinking	Yes	43(6.3%)	35.31 ± 4.29	<0.001	8.91	.631
Alcohol Drinking	No	644(93.7%)	32.43 ± 4.48	<0.001	8.60	.631
Liver Disease	Yes	12(1.7%)	32.28 ± 3.96	.799	8.86	.837
Liver Disease	No	675(98.3%)	32.62 ± 4.53	.799	8.61	.837
Anaemia	Yes	32(4.7%)	27.86 ± 2.46	<0.001	4.95	<0.001
Anaemia	No	655(95.3%)	32.85 ± 4.47	<0.001	8.80	<0.001
CCI	0	462(67.2%)	32.88 ± 4.47	.103	8.51	.684
	1	162(23.6%)	31.86 ± 4.46		8.95
	2	53(7.7%)	32.91 ± 5.08		8.49
	3	9(1.3%)	30.88 ± 3.92		9.18
	5	1(0.1%)	31.70		9.80
ASA	1	137(19.9%)	33.42 ± 4.69	.018	8.38	.217
	2	467(68.0%)	32.46 ± 4.43		8.70
	3	79(11.5%)	31.90 ± 4.55		8.73
	4	4(0.6%)	36.70 ± 3.70		5.1
NNIS	0	516(75.1%)	32.81 ± 4.55	.096	8.40	.043
	1	162(23.6%)	31.95 ± 4.38		9.44
	2	9(1.3%)	33.19 ± 4.74		6.29
Surgery Segments	1	342(49.8%)	33.26 ± 4.43	<0.001	7.94	<0.001
	2	292(42.5%)	32.16 ± 4.54		9.10
	3	48(7.0%)	30.78 ± 4.45		10.70
	4	5(0.7%)	32.48 ± 2.65		7.04
Length of ICU Stay	YES	67(9.8%)	31.42 ± 4.06	0.022	8.93	0.507
Length of ICU Stay	NO	620(90.2%)	32.74 ± 4.55	0.022	8.58	0.507
Occurrence of Redo Surgery	YES	11(1.6%)	33.36 ± 4.99	0.580	5.64	0.014
Occurrence of Redo Surgery	NO	676(98.4%)	32.60 ± 4.52	0.580	8.67	0.014
Wound Infection	YES	26(3.8%)	31.13 ± 4.12	0.089	8.09	0.499
Wound Infection	NO	661(96.2%)	32.67 ± 4.53	0.089	8.64	0.499

Hct (post) post-operative haematocrit, HCT decline decline of haematocrit, CCI Charlson Comorbidity Index, ASA American Society of Anaesthesiologists Physical Status Classes Index, NNIS National Nosocomial Infections Surveillance (pre-assessment scale)