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. 2020 Jul 9;15(7):e0235754. doi: 10.1371/journal.pone.0235754

Table 1. Characteristics of 340 US hospitals and unadjusted associations between hospital characteristics and rates of methicillin-resistant Staphylococcus aureus (HA-MRSA) infection for discharges occurring between September 2015 and August 2016.

Upper Bound Mean or Percentage (95% CI) Unadjusted Incidence Rate Ratio* (IRR) 95% Confidence Interval of IRR p-value*
Lower Bound Upper Bound
PPRs (Mean %) 62.73 (58.99, 66.46) 0.973 0.968 0.979 <0.001
Teaching facility (%) 21.87 (16.61, 28.24) 1.353 0.837 2.187 0.208
Rural location (%) 20.94 (15.68, 26.19) 2.919 1.865 4.571 <0.001
Ownership type (%)
    For-Profit 47.44 (40.99, 53.88) 1.000 (ref)
    Public 14.10 (9.61, 18.59) 2.011 1.077 3.755 0.028
    Non-Profit 38.46 (32.18, 44.74) 1.687 1.121 2.539 0.012
# Licensed beds (Mean) 236.97 (200.77, 273.16) 0.999 0.998 0.999 0.025
Publicly insured or uninsured (Mean %) 60.67 (58.61, 62.73) 1.013 1.001 1.025 0.028
Hispanic patients (Mean %) 25.52 (22.56, 28.48) 1.001 0.994 1.008 0.627
Black patients (Mean %) 10.36 (9.23, 11.49) 1.019 1.003 1.034 0.013
Physical space per bed in square feet (Mean) 2565 (1933, 3197) 0.634 0.433 0.929 0.019
Mean Elixhauser score (Mean) 2.90 (2.68, 3.13) 1.064 0.969 1.168 0.190
Nurse-to-patient ratio (Mean) 0.964 (0.776, 1.152) 0.976 0.819 1.162 0.789
Major therapeutic procedures (Mean %) 36.05 (33.95, 38.15) 1.001 0.991 1.012 0.728
Occupancy rate (Mean %) 39.33 (37.00, 41.67) 0.978 0.965 0.992 0.002

PPRs, private patient rooms.

* Unadjusted incidence rate ratios and p-values were generated using bivariate negative binomial logistic regression models.