Table 1.

Provisional estimates of low tidal volume and computerized protocol use by site

Sites	No. of ICUs	No. of ICU beds	No. of months CDS tool in place during the measurement period	Total no. of ventilated patient encounters during the measurement period	Estimated % encounters treated with initial set tidal volume ≤ 6.5 ml/kg PBW (%)	Estimated % encounters treated using at least one computerized protocol (%)
Site A*	5	84	3	316	80	59
Site B	1	13	11	40	68	83
Site C	1	4	7	24	63	79
Site D	1	4	7	18	61	50
Site E*	1	16	5	65	60	91
Site F	1	6	5	0	60	0
Site G*	1	16	13	753	52	50
Site H	1	6	8	25	52	64
Site I*	1	24	11	648	38	10
Site J	1	8	9	23	30	13
Site K	1	4	11	15	27	40
Site L*	2	38	17	984	21	6
Overall	17	223		2911	42	28
Tertiary hospitals (%)	59	80		95
Tertiary hospitals only	10	178		2766	41	27
Non-tertiary hospitals	7	45		145	61	47
Absolute difference					20**	20**

*Tertiary site

**Significant at < .001