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. Author manuscript; available in PMC: 2021 Apr 19.
Published in final edited form as: Infect Control Hosp Epidemiol. 2020 Jan 13;41(3):295–301. doi: 10.1017/ice.2019.358

Table 2.

Targeted Assessment for Prevention (TAP) Report Hospital-Onset C. difficile Laboratory-Identified Event (CDI) Data at Healthcare System Level and by Hospital, Healthcare System TAP Strategy Implementation for Clostridioides difficile Infection (CDI) Prevention

Setting Intervention Period (18 mo each) Hospital- Onset CDI Predicted No. No. of Patient Days Cumulative Attributable Difference ‘CAD’ (SIR goal = 0.7) Standardized Infection Ratio ‘SIR’ P Valuea
Healthcare system (all 3 hospitals) Pre 249 249.962 267,827 74.03 1.00 .15
Post 209 239.771 263,940 41.16 0.87
Hospital A Pre 180 174.496 178,106 57.85 1.03 .07
Post 138 164.069 165,296 23.15 0.84
Hospital B Pre 37 45.937 57,925 4.84 0.81 .91
Post 43 51.963 65,111 6.63 0.83
Hospital C Pre 32 29.529 31,796 11.33 1.08 .74
Post 28 23.739 33,533 11.38 1.18
a

Two-sided mid-P method was used for statistical comparison of standardized infection ratios (SIRs) between pre- and post-intervention period. (Reference: Statistical tool SAS macro for comparing 2 SIRs. Available at https://www.cdc.gov/nhsn/ps-analysis-resources/index.html.)