Table 4.

CDSS usage in solo and non-solo primary care practices with physician owners or physician group owners regardless of the EMR/EHR status at the reporting location (providers weighted by physician weight of National Ambulatory Medical Care Survey 2015))

CDSS	General use non-solo (%) (n=61 094)	General use solo (%) (n=53 687)	Difference (%)
EREMIND	89.1	67.6*	21.5
EIDPT	87.1	63.0*	24.1
EWARN	92.6	70.0*	22.6
EMEDALG	96.1	79.8*	16.3
EMEDID	95.3	78.1*	17.2
ECPOE	95.4	73.7*	21.7
EGRAPH	73.6	44.7*	28.9

*P<0.001 by proportion tests between solo and non-solo practices, regardless of their EMR/EHR status for each variable, routine usage and non-routine usage.

CDSS, clinical decision support system; EHR, electronic health record; EMR, electronic medical record.