Chronic pain in survivors of critical illness: a retrospective analysis of incidence and risk factors

Table 3 Comparison of the risk factors for the two groups: results of the univariate analysis

	Pain group	n= 86	No-pain group	n= 110
Categoric variables	n	%	n	%	Pvalue	Unadjusted OR (95% CI)
Male	49	57	57	52	0.56	1.2 (0.7-2.2)
Female	37	43	53	48	0.56	1.2 (0.7-2.2)
Sepsis	31	36	13	12	0.0001^a	4.2 (2.0-8.7)
Medical	37	43	38	35	0.23	1.4 (0.8-2.6)
Surgical	38	44	63	57	0.08	0.6 (0.3-1.0)
Neurology	3	3	4	4	1.00	0.9 (0.2-4.4)
Trauma	8	9	5	5	0.24	2.2 (0.7-6.8)
Preexisting conditions	8	9	12	11	0.81	0.8 (0.3-2.2)
Wounds	45	52	74	67	0.04^a	0.5 (0.3-1.0)
Continuous variables	Mean	SD	Mean	SD	P value
Mean age	65	16.8	61	18.8	0.07
Mean APACHE II score	16	6.5	15	5.4	0.43
Mean number ventilator days	5	9.4	2	4.2	0.36
Mean ILOS	10	11.7	6	6.2	0.01^a
Mean HLOS	24	21.7	18	13.2	0.07

CI, confidence interval; HLOS, hospital length of stay; ILOS, ICU length of stay;
OR, odds ratio. ^aSignificant at P < 0.05.

ISSN: 1364-8535