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. 2020 Mar 18;71(9):e497–e505. doi: 10.1093/cid/ciaa169

Table 2.

Standardized Mean Differences of Baseline Characteristics Before and After Propensity Score Matching, Inverse Probability of Treatment Weighting of Propensity Scores, and Propensity Score Stratification (Displayed by Each Quintile) Approaches Between Patients Transitioned to Oral Antibiotic Therapy and Those Remaining on Intravenous Antibiotic Therapy for Enterobacterales Bloodstream Infections

Variable Full Cohort Matching IPTW Quintile 1 Quintile 2 Quintile 3 Quintile 4 Quintile 5
Age 0.004 −0.011 −0.017 0.216 0.014 0.024 0.120 −0.245
Female −0.097 −0.011 0.023 0.055 0.163 −0.059 0.070 −0.204
White race −0.066 0.016 −0.008 −0.054 −0.015 0.015 −0.000 −0.026
Black race 0.077 −0.030 0.020 0.063 0.061 0.023 −0.018 −0.046
Asian race −0.044 0.021 −0.022 −0.110 −0.036 −0.004 −0.054 0.153
Latino ethnicity 0.013 0.045 −0.014 −0.019 −0.220 0.004 0.187 −0.010
Weight in kilograms 0.023 −0.010 0.019 0.325 −0.128 0.046 0.084 −0.153
End-stage liver disease −0.039 0.006 −0.021 −0.174 0.129 −0.121 0.063 0.013
End-stage renal disease requiring dialysis −0.129 0.012 −0.014 −0.096 0.113 0.031 −0.025 −0.145
Structural lung disease −0.112 0.042 −0.014 0.033 −0.041 0.116 −0.029 −0.148
Congestive heart failure (ejection fraction <45%) −0.018 0.000 −0.009 0.001 −0.022 0.107 −0.042 −0.029
Diabetes 0.049 0.003 −0.016 0.026 −0.037 −0.002 0.076 −0.021
Human immunodeficiency virus 0.036 0.007 −0.021 −0.247 −0.122 0.134 0.101 −0.055
Chemotherapy within 6 months 0.010 0.021 −0.006 −0.056 −0.113 0.239 0.048 −0.173
Absolute neutrophil count <500 cells/mL −0.242 0.005 0.042 0.288 −0.075 −0.199 0.062 *
Immunomodulatory therapy or high-dose steroids within 30 days 0.023 0.015 −0.012 −0.108 −0.006 0.005 0.120 −0.052
Solid organ transplant 0.095 −0.018 −0.015 −0.029 −0.140 0.130 −0.055 0.067
Hematopoietic stem cell transplant within 12 months −0.182 0.007 0.030 0.136 −0.001 −0.204 −0.055 0.085
Total days of antibiotic therapy 0.229 0.023 −0.027 −0.104 −0.028 −0.004 0.102 0.138
Combination antibiotic therapy for >48 hours −0.204 0.000 −0.015 −0.121 −0.014 0.128 −0.140 0.011
Respiratory source −0.242 −0.027 −0.044 −0.186 0.051 −0.020 0.027 *
Skin and soft tissue source −0.078 0.070 −0.019 −0.075 −0.137 0.131 0.018 0.148
Urinary tract source 0.343 −0.030 −0.021 −0.098 −0.069 0.093 0.066 0.045
Biliary source 0.069 0.000 0.010 0.205 −0.035 0.038 −0.101 −0.008
Intra-abdominal source −0.107 0.030 0.004 −0.018 0.068 −0.127 0.086 −0.068
Catheter-associated source −0.162 −0.017 0.022 0.185 0.053 −0.100 −0.101 0.027
Pitt bacteremia score on day 1 −0.535 0.048 0.020 −0.453 −0.053 0.036 0.119 −0.012
Intensive care unit on day 1 −0.324 0.013 0.013 −0.047 −0.178 0.125 −0.019 −0.017
Citrobacter spp. 0.060 0.049 0.058 0.198 0.128 −0.011 −0.088 0.086
Enterobacter spp. −0.037 0.008 0.073 0.174 0.213 −0.099 0.014 −0.146
Escherichia coli 0.162 0.046 0.025 −0.146 −0.037 0.013 0.116 0.194
Klebsiella spp. −0.099 −0.048 −0.050 0.038 −0.043 0.057 −0.088 −0.184
Proteus mirabilis −0.080 −0.069 −0.053 0.064 −0.036 −0.051 −0.153 −0.062
Serratia marcescens −0.076 0.025 −0.063 −0.372 −0.221 0.074 0.144 0.172

Standardized differences could not be computed for variables with an asterisk “*” because neither the exposed nor unexposed groups in the specific quintile had patients with the specific variable.

Abbreviation: IPTW, inverse probability of treatment weighting.