Table 2.

Study Population Characteristics

	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014
General Medicine Units
Patient Number:	11404	13127	13709	12379	11839	13577	14512	14523	14535	14712	14199	14795
Age, year:	60 [46,76]	60 [46,75]	60 [46,75]	59 [45,75]	58 [45,73]	57 [44,73]	57 [44,71]	56 [43,70]	57 [44,70]	56 [43,70]	57 [44,69]	57 [44,69]
Male, %:	44.7	45.6	45.4	44.5	46.1	45.4	46.8	45.6	46.5	47.2	48.2	48.2
Charlson score:	4 [2,6]	4 [2,6]	4 [2,6]	4 [2,7]	4 [2,7]	4 [2,7]	4 [2,7]	4 [2,7]	5 [2,7]	5 [2,8]	5 [2,8]	5 [2,8]
Income, USD:	30962 [25289, 37963]	30887 [25289, 37963]	30887 [25289, 37793]	30876 [25289, 37555]	30876 [25289, 37555]	30074 [25234, 37555]	29281 [25234, 37555]	28973 [24830, 36744]	30028 [25118, 37555]	30091 [25234, 37503]	30091 [25189, 37555]	29286 [25234, 37793]
Hospital mortality,%:	2.87	2.99	2.63	2.59	2.50	2.36	2.22	2.11	2.26	2.41	2.41	2.22
Cardiopulmonary arrests, n:	n/a	n/a	57	50	69	58	49	43	51	43	37	35
Hospital lengths of stay, days:	3.79 [2.02,6.81]	3.69 [1.99,6.68]	3.54 [1.94,6.36]	3.59 [1.98,6.39]	3.52 [1.95,6.31]	3.23 [1.84,6.01]	3.08 [1.78,5.79]	3.17 [1.82,5.85]	3.34 [1.85,5.99]	3.24 [1.86,5.93]	3.28 [1.84,5.98]	3.10 [1.75,5.82]
Rapid Response System activation:	0	0	0	72	57	112	126	149	309	419	400	370

Cardiopulmonary arrest data only collected beginning in 2005. Values expressed as medians with interquartile range.