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Table 8 Covariate and equation parameters for linear regression of length of stay

From: A multi-center nested case-control study on hospitalization costs and length of stay due to healthcare-associated infection

Variable Unstandardized
Coefficients
Std. Error Standardized
Coefficients
Statistics
(t)
P
Constant 1.269 .087   14.533 .000
HAIs sites
Blood related .315 .152 .162 2.077 .039
Superficial incision .305 .093 .299 3.261 .001
Organ lacunar .070 .224 .023 .314 .754
Deep incision .579 .142 .326 4.066 .000
Intra-abdominal tissue .184 .317 .043 .580 .563
Urinary .288 .090 .301 3.198 .002
Skin soft-tissue .135 .117 .097 1.153 .251
Lower respiratory .211 .076 .319 2.769 .006
Gastrointestinal .041 .138 .023 .298 .766
Other .278 .312 .065 .891 .374
Classification of GDP
 1 −.028 .090 −.027 −.314 .754
 2 −.094 .059 −.140 −1.586 .115
 3 −.083 .070 −.104 −1.181 .239
Classification of the number of hospital beds
 1 −.120 .074 −.136 −1.620 .107
 2 −.196 .067 −.262 −2.934 .004
 3 .038 .070 .052 .535 .593