Bivariate comparison of hospital computerised provider order entry safety performance test scores, by hospital demographic characteristics
| Joint Commission accreditation | n | Mean | SD |
| Not accredited by Joint Commission | 585 | 60.4 | 16.4 |
| Accredited by Joint Commission | 4522 | 59.2 | 16.9 |
| Size | |||
| Small hospitals (<100 beds) | 1029 | 60.5 | 17.1 |
| Medium hospitals (100–399 beds) | 2921 | 59.3 | 16.8 |
| Large hospitals (400+ beds) | 1157 | 58.5 | 16.9 |
| Health system membership | |||
| Not a member of a healthcare system | 1083 | 59.8 | 17.5 |
| Member of a healthcare system | 4024 | 59.2 | 16.7 |
| Teaching status | |||
| Non-teaching hospital | 2701 | 59.0 | 16.7 |
| Teaching hospital | 2406 | 59.8 | 17.1 |
| Ownership | |||
| Private, non-profit hospital | 3654 | 59.6 | 17.1 |
| Private, for-profit hospital | 939 | 58.2 | 16.0 |
| Public, non-federal hospital | 514 | 59.3 | 16.7 |
| Location | |||
| Located in a rural area | 1253 | 60.2 | 16.8 |
| Located in an urban area | 3854 | 59.1 | 16.9 |
| Region | |||
| Located in the North-East | 1064 | 62.0 | 16.4 |
| Located in the West | 1208 | 61.4 | 17.4 |
| Located in the Midwest | 1023 | 58.6 | 16.6 |
| Located in the South | 1812 | 56.8 | 16.5 |
n=1527 hospitals in an unbalanced panel from 2009 to 2016. Total of 5107 hospital-year observations.