. 2022 Mar;104(3):202–209. doi: 10.1308/rcsann.2021.0156

Table 2 .

Comparison of covariates by mortality at 5 years post emergency laparotomy


Factor	Deceased or alive at 5 years	1st Quartile	Median	3rd Quartile	Wilcoxon rank sum, unpaired, two-tailed test p-value
Age (years)	Deceased	64	73	80	<0.001
Age (years)	Alive	47	64	74	<0.001
Albumin (g/dl)	Deceased	24	29	35	0.011
Albumin (g/dl)	Alive	24	32	38	0.011
Anaesthetic time (min)	Deceased	44	61	85	<0.001
Anaesthetic time (min)	Alive	40	50	70	<0.001
ASA	Deceased	3	3	4	<0.001
ASA	Alive	2	2	3	<0.001
Baseline creatinine (μmol/l)	Deceased	50	66	81	0.0007
Baseline creatinine (μmol/l)	Alive	50	60	74	0.0007
Creatinine (μmol/l)	Deceased	56	73	107	0.11
Creatinine (μmol/l)	Alive	55	69	92	0.11
C-reactive protein (mg/l)	Deceased	17	60	163	0.25
C-reactive protein (mg/l)	Alive	19	70	207	0.25
Haematocrit	Deceased	0.32	0.36	0.41	<0.001
Haematocrit	Alive	0.33	0.38	0.43	<0.001
Neutrophils ×10⁹/l	Deceased	5.0	7.7	12.2	0.10
Neutrophils ×10⁹/l	Alive	5.45	8.6	12.9	0.10
Sex	Deceased	Male=155; Female=162			0.82
Sex	Alive	Male=316; Female=320			0.82
SMID 16 Quintile	Deceased	2	3	4	0.65
SMID 16 Quintile	Alive	2	3	4	0.65
Surgical time (min)	Deceased	44	61	85	0.21
Surgical time (min)	Alive	40	50	70	0.21

Importantly there is a high correlation between American Society of Anesthesiology (ASA) grade and most of the significant relationships, see the text for further details. Significant values are highlighted in bold.