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Table 1 Means and standard deviations of variables in the regression model

From: The relationship between safety net activities and hospital financial performance

Variable Mean Std. Dev.
Total operating margin 0.0003 0.0817
Total profit margin 0.0480 0.0690
Total expenditure (millions $) 96.900 92.000
SES indexa -0.0993 0.9252
Medicaid intensity 0.1375 0.1218
Uncompensated care burden 3.7013 5.3715
Discharges 10938 7887.0
Outpatient visits 122389 116644
Intern-to-bed ratio 0.0549 0.1267
Not-for-profit 0.7363 0.4407
For-profit 0.1436 0.3507
System HHI 0.3642 0.1175
Mean HMO penetration 0.2565 0.1374
% Medicare admission 0.4801 0.1379
N 16680  
  1. Notes:
  2. Source: AHA Annual Hospital Survey and Medicare Hospital Cost Reports (1990-1999)
  3. aA high score on SES index indicates low socioeconomic status