Table 3.

Main demographic data and clinical characteristics in respondents and nonrespondents to the EQ-5D questionairre

Factor	Nonrespondents	Respondents	P
Age (years)	48 (33–59)	57 (43–69)	0.008
Sex (male)	64.4%	61.3%	0.73
APACHE II score	23 (17–29)	20 (17–26)	0.19
Admission diagnostic category
Trauma	22.2%	12.8%	0.15
Surgical, nontrauma	17.8%	33.3%	0.06
Medical	42.2%	40.4%	0.86
Neurological	15.6%	7.8%	0.15
Presence of chronic underlying disease	44.4%	59.9%	0.09
ICU length of stay (days)	4.7 (3.0–7.0)	4.4 (2.8–6.6)	0.82
Hospital length of stay (days)	14 (8–22)	18.5 (11–29)	0.05

Values are expressed as median (25th to 75th percentile) or number (%) of patients. APACHE Acute Physiology and Chronic Health Evaluation; EQ-5D, five-dimensional EuroQol; ICU, intensive care unit.