Table 3. Standardized differences in median survival time by type of facility among institutionalized residents in Madrid, Spain, 1998–1999 to 2013.

	Facility
	Large-sized public	Medium-sized public/subsidized	Medium-sized private	Small-sized private
Follow-up time a (years)	4.6	4.8	7.0	4.5
Standardized difference in time b (95% CI)
Model 1c	0.0 (reference)	0.6 (-0.9 to 2.1)	2.7 (-0.3 to 5.7)	1.2 (-0.6 to 3.0)
Model 2d	0.0 (reference)	0.9 (-0.8 to 2.6)	3.6 (0.5 to 6.8)	1.9 (0.0 to 3.8)

^a Unstandardized follow-up times to 50% cumulative mortality obtained from sampling-weighted Kaplan-Meier methods stratified by type of facility.

^b Standardized differences in follow-up times to 50% cumulative mortality and their 95% CIs comparing other types of facilities with large-sized public facilities obtained from spline-based survival models weighted by combined inverse probability weights and stratified by type of facility.

^c Standardized for baseline age (65–74, 75–79, 80–84, 85–89, or ≥90 years), sex (female or male), and educational level (less than primary or primary or more).

^d Further standardized for baseline dementia (no or yes), number of chronic conditions other than dementia (0–2 or ≥3), and functional dependency (no/mild, moderate, or severe/total).