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Table 5 Logistic regression on readmission within seven days for all DDs when viewing external medical history (Hypothesis 1a)

From: The impact of EHR and HIE on reducing avoidable admissions: controlling main differential diagnoses

Theory variables in the equation All DDs ( N=115,719) GE ( N=7,165) AP ( N=21,579) UTI ( N=6,950) CP ( N=67,650) PO ( N=12,375)
External history viewed a 0.520 (<0.001) 0.318 (0.051) 0.256 (<0.001) 0.308 (0.021) 0.807 (0.176) 0.867 (0.714)
Age 0.976 (<0.001) 0.998 (<0.001) 0.981 (<0.001) 0.982 (<0.001) 0.981 (<0.001) 0.971 (<0.001)
Gender c 0.792 (<0.001) 1.102 (0.376) 0.638 (<0.001) 0.803 (0.222) 1.264 (<0.001) 1.138 (<0.001)
HMO β 1.089 (0.031) 0.704 (0.003) 1.160 (0.012) 1.196 (0.363) 1.276 (<0.001) 1.149 (0.380)
Constant 0.123 (<0.001) 0.091 (<0.001) 0.181 (<0.001) 0.066 (<0.001) 0.047 (<0.001) 0.063 (<0.001)
  1. The table reports a series of multiple regression analyses. Block 2 (control for type of department) and Block 3 (control for type of hospital) are not shown here, but were also included in the regression. Table entries represent the odd ratio, with p-values in parentheses. CP = chest pain; AP = abdominal pain; GE = gastroenteritis; UTI = urinary tract infection; PO = pneumonia organism; a Coded 0= Medical history not viewed, 1=Medical history viewed. β Coded 0 = other HMO, 1 = main HMO. c Coded 0 = female, 1= male. (all similar tables below use the same abbreviations).