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. 2021 Nov 29;11:23098. doi: 10.1038/s41598-021-02376-y

Table 2.

Hospitalization model results.

Parameter COVID Hospitalization Non COVID Hospitalization
Estimate t-statistics Estimate t-statistics
Intercept −20.151 −11.971 −9.858 −6.025
Covid-19 transmission factors
COVID case per 100 people, with 1 week lag −0.076 −4.292
COVID case per 100 people, with 2 weeks lag 1.266 17.790 −0.107 −5.933
x Effect in the West Region −0.145 −1.765
x Effect in the South Region −0.694 −8.575
% difference with the preceding 3 week moving average 0.089 3.986
x Effect in the Mid−West Region* 0.177 5.894
x Effect in the South Region −0.038 −1.653
Weekly COVID-19 cases higher than the moving average (base is covid-19 cases same or lower) 0.058 5.753
Mobility trends
Ln (Daily Average Exposure) with a 2 weeks lag 0.157 7.285
Ln (Daily Average Exposure) with a 3 weeks lag 0.295 12.502
Demographics
Young population percentage (19 years or less) −0.051 −5.511 −0.043 −4.835
Hispanic percentage 0.025 11.141 0.008 3.426
African American percentage 0.020 9.431 0.002 0.844
Female percentage 0.173 10.719 0.153 9.758
Ln (median income) 0.619 5.250
Health indicators
Ln (number of cardiovascular patients per 1000 Medicare beneficiaries) 1.133 9.215
Hepatitis C Cases per 100 K people 0.070 2.624
Ln (HIV rate per 100 K People) 0.236 6.307
Ln (cancer rate per 100 K People) 0.973 3.747
Spatial factors
Region (Base: West, South, Pacific)
Mid-West region 0.111 1.897
North East region −0.109 −2.197
x Effect Since 2nd Wave started (October 30th) 0.204 3.923
Top10 tourist state 0.243 3.736
x Effect Since 2nd Wave started −0.114 −3.061
Number of airports per 100 k people 0.017 1.651
Temporal factors
Effect Since 2nd Wave started (October 30th) 0.360 18.212
Effect Since 25th December 0.106 6.422 −0.041 −3.786
Correlations
σ2 1.912 49.925 1.370 40.445
ρ 0.930 453.710 0.965 791.200
Φ 0.835 237.303 0.888 306.605

*The indented variable name presentation starting with “x” is adopted to indicate that the variable represents the interaction term with that specific variable.