Table 2.

Bivariate regressions of staffing on hospital characteristics

AHA Hospital characteristics	Coefficient	95% CI LL	95% CI UL	p

Births
<500	ref	ref	ref	ref
500–999	−0.164	−0.324	−0.004	0.044
1,000–2,499	−0.296	−0.442	−0.149	<.001
≥2,500	−0.519	−0.672	−0.366	<.001
Ownership
Government	ref	ref	ref	ref
Church	−0.049	−0.260	0.162	0.648
Other non-profit	−0.015	−0.182	0.151	0.856
Investor owned	−0.221	−0.473	0.032	0.087
Obstetrics Level
Uncomplicated cases	ref	ref	ref	ref
Most complicated cases	−0.074	−0.229	0.082	0.355
All serious illnesses/abnormalities	−0.329	−0.489	−0.169	<.001
NICU Hospital ^a	−0.357	−0.479	−0.234	<.001
Neonatal intermediate hospital ^a	−0.182	−0.327	−0.037	0.014
Teaching hospital ^a	−0.255	−0.371	−0.138	<.001
Core based statistical area
Metro	ref	ref	ref	ref
Micro	0.193	0.041	0.344	0.013
Rural	0.323	0.121	0.525	0.002
Critical access hospital ^a	0.286	0.110	0.462	0.001
Sole community provider ^a	0.086	−0.129	0.301	0.434

ref = no