Table 2

Characteristics of the study hospitals

Hospital	Wards	Ward shifts	Patient shifts	Ward beds			Baseline staffing (hours per patient-day)—mean per ward
Hospital	n	n	n*	Mean	Min	Max	Low	Standard	High
A	19	27 759	632 060	23	8	42	5.5	6.8	7.5
B	31	45 291	1 361 430	29	10	63	5.5	6.9	7.3
C	12	17 532	210 492	14	8	21	5.5	6.5	7.7
D	19	27 759	719 632	27	18	36	5.2	6.6	7.1
All	81	118 341	2 923 614	25	8	63	5.4	6.7	7.3

*Varies between runs since the number of patients is random sample of what is expected in a typical year. This is the average across 10 runs for the core scenario (empirical availability and standard staffing).