Appendix L. Final data sheet submitted by each site that included the list of potential SSI risk factors and other pertinent variables

11/Aug/2010
Column HeadingValue TypeDescriptionTypei
Admit_srcCharacterSource of admissioniiE
Icu_admitNumeric1 if admitted from OR to ICU, else 0E
Inpat_surgNumeric1 if inpatient surgery, else 0E
Outpat_surgNumeric1 if outpatient surgery, else 0E
AgeNumeric (yrs)Patient age, yearsP
BMINumericBody Mass Index before surgeryP
CA_hxNumericListed ICD9 codeiii w/ decimal, for the disease, else 0P
ch_kidney_dxCharacterListed ICD9 codeiii, w/ decimal, for the disease, else 0P
ch_lung_dxCharacterListed ICD9 codeiii, w/ decimal, for the disease, else 0P
COPD_hxNumericListed ICD9 codeiii, w/ decimal, for the disease, else 0P
diabetesCharacterListed ICD9 codeiii, w/ decimal, for the disease, else 0P
DVTNumeric1 if pat. developed DVT related to surgery within 90daysP
HypocholestCharacterListed ICD9 codeiii, w/ decimal, for the disease, else 0P
MRSANumericHx of MRSAP
PatidNumericRandom or sequential de-identified number with prefixivP
PayerNumericPayer/insurance type (govt=2, nongovt=1, none=0)P
Postop_hematocritNumericFirst hematocrit value after surgeryP
Postop_admitNumericHospital admission after surgery within 30 days=1, else 0P
Preop_hematocritNumericLatest hematocrit value just before surgeryP
Preop_hemoglobNumericLatest hemoglobin value just before surgeryP
Postop_hemoglobNumericFirst hemoglobin value after surgeryP
Preop_stayNumeric (days)Days from admission to surgery start dayP
Proeop_albuminNumericLast albumin value before surgery start timeP
Rheum-dxCharacterListed ICD9 codeiii, w/ decimal, for the disease, else 0P
SexCharacterM or FP
SSINumeric1 if pat. had a SSI as a result of this surgery, else 0P
Abx_dcNumeric1 if yes…0 if no*S
ASANumericASA scoreS
EmergentNumeric1 if emergency surgery, else 0S
General_anesNumeric1 if yes…0 if noS
No_proceduresNumeric (count)Number of procedures during same operationS
Surg_date/timeDateDate and time of surgeryS
Surg_durNumericSurgery duration, minutesS
Surg_procCharacterSurgical procedure (TH, TK, CA, HE, AP)S
Surgeon_exNumeric (yrs)Number of years surgeon has been practicingS
Wnd_classNumeric1-4S

* Abx d/c within 48 hrs for CABG and within 24 hrs for TH, TK, HE, AP

i E = environmental factor, P = patient specific, S = surgery specific.
ii Refer to Admission_Source_Table
iii Refer to SSI Risk Tool Comorbidities ICD9 Codes table

Current as of December 2012
Internet Citation: Appendix L. Final data sheet submitted by each site that included the list of potential SSI risk factors and other pertinent variables. December 2012. Agency for Healthcare Research and Quality, Rockville, MD. http://www.ahrq.gov/research/findings/final-reports/ssi/ssiapl.html