Differences in one-year health outcomes and resource utilization by definition of prolonged mechanical ventilation: a prospective cohort study

Table 3 One-year health outcomes of hospital survivors by DRG 541/542 status

	Unadjusted^a		Adjusted analyses for DRG 541/542 versus short-term MV^b
	Short-term MV	DRG 541/542	Between group difference (95% CI)	t	P
ADLs
Preadmission	1.2 (1.9)	0.9 (1.8)	-0.3 (-0.6 to +0.04)	-1.70	0.09
2 months	2.5 (2.1)	4.1 (1.9)	1.6 (1.0 to 2.2)	5.81	< 0.0001
6 months	1.9 (2.1)	2.8 (2.1)	0.9 (0.3 to 1.5)	3.29	0.003
12 months	1.6 (2.0)	2.3 (2.1)	0.7 (0.2 to 1.2)	2.97	0.005
IADLs
Preadmission	2.4 (2.8)	2.1 (2.7)	-0.4 (-0.9 to +0.1)	-1.41	0.16
2 months	4.8 (2.4)	5.7 (2.1)	0.9 (0.4 to 1.4)	3.60	0.0006
6 months	3.7 (2.6)	5.2 (2.4)	1.5 (0.8 to 2.2)	4.20	0.0003
12 months	3.4 (2.7)	4.8 (2.6)	1.4 (0.9 to 2.0)	4.86	< 0.0001
SF-36 physical function
Preadmission	56 (38)	61 (37)	5 (-2 to +12)	1.39	0.17
2 months	29 (28)	15 (23)	-14 (-19 to -8)	-5.03	< 0.0001
6 months	42 (33)	28 (30)	-14 (-22 to -6)	-3.69	0.0006
12 months	46 (34)	31 (31)	-15 (-22 to -7)	-3.98	0.0002
SF-36 role physical
Preadmission	53 (42)	59 (43)	6 (-3 to +14)	1.30	0.20
2 months	26 (30)	19 (25)	-7 (-13 to -1)	-2.48	0.01
6 months	44 (35)	36 (32)	-8 (-16 to -1)	-2.20	0.03
12 months	46 (36)	41 (34)	-5 (-14 to +4)	-1.21	0.23

Analyses for short-term mechanical ventilation (n = 312) and DRG 541/542 (n = 214) patients. ^aValues from two-sample t-tests are expressed as means (standard deviation). ^bValues are expressed as mean (95% confidence interval) based on linear-mixed effects models. Both unadjusted and linear mixed-effects models included imputed values and adjusted for day 1 APS, admitting service, pre-admission IADLs, pre-admission Charlson score, age ≥ 65 years, and education status. ADL, activity of daily living; DRG, diagnosis related group; IADL, instrumental activity of daily living; SF-36, Short Form 36-item questionnaire.

ISSN: 1364-8535