Modelling of intensive care unit (ICU) length of stay as a quality measure: a problematic exercise

Table 2 Predicted values of ICU length of stay; n = 87,980

Variable	Minimum	p25	p50	mean	p75	Maximum
ICU days	0.003	0.944	1.837	3.214	3.598	126.913
GLMM: fitted (RE), days	0.141	1.617	2.561	3.177	4.072	82.029
GLMM: fixed, days	0.08	0.979	1.992	3.612	4.275	66.768
OMELOS: fixed, days	-62.534	-1.925	-0.004	-0.398	1.172	123.032

p25, p50 & p75; 25^th, 50^th and 75^th percentiles
GLMM Generalised linear mixed model, RE Random effects included in estimates, Fixed No random effects included in estimates, OMELOS Observed minus expected length of stay

ISSN: 1471-2288