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. Author manuscript; available in PMC: 2021 Mar 1.
Published in final edited form as: Acad Med. 2020 Mar;95(3):435–441. doi: 10.1097/ACM.0000000000003052

Table 1.

Demographic Comparison of Patients With and Without CAUTI, From a Study of Effects of a Simulation-Based Curriculum on CAUTI Rates, Northwestern University Feinberg School of Medicine, 2011–2016a

Characteristic No CAUTI CAUTI Total P value
Patient gender, no. .41b
 Male 25,190 48 25,238
 Female 32,018 72 32,090
Patient age, no. .08
 18–30 3,272 6 3,278
 31–40 6,530 7 6,537
 41–50 9,103 15 9,118
 51–60 11,831 20 11,851
 61–70 14,078 41 14,119
 71–80 9,162 21 9,183
 80+ 3,232 10 3,242
BMI, no. .23
 < 18 721 3 724
 18.1–24.9 17,313 35 17,348
 25–30.9 21,684 37 21,721
 31–34.9 8,195 18 8,213
 35–39.9 5,193 13 5,206
 > 40 4,102 14 4,116
Operative case type, no. < .001
 General surgery 9,692 24 9,716
 Cardiac surgery 4,523 13 4,536
 Gynecology 9,409 12 9,421
 Otolaryngology 760 1 761
 Neurosurgery 3,520 12 3,532
 Orthopedics 9,232 9 9,241
 Plastic surgery 1,768 4 1,772
 Spine surgery 4,490 9 4,499
 Thoracic surgery 1,478 1 1,479
 Abdominal transplant surgery 3,346 7 3,353
 Urology 7,546 11 7,557
 Vascular surgery 1,444 17 1,461
Operative case duration, no. < .001
 > 1 hour 6,680 9 6,689
 1–2 hours 14,257 18 14,275
 2–3 hours 12,926 21 12,947
 3–4 hours 9,739 18 9,757
 4–5 hours 5,730 13 5,743
 5–6 hours 3,203 7 3,210
 6–7 hours 1,855 11 1,866
 7–8 hours 1,175 10 1,185
 > 8 hours 1,643 13 1,656
ASA class, no. < .001
 Class 1 16,842 23 16,865
 Class 2 23,029 18 23,047
 Class 3 14,787 65 14,852
 Class 4 2,513 14 2,527
 Class 5 37 0 37
Provider inserting IUC, no. .003
 Nurse 4,279 9 4,288
 Medical student 7,235 4 7,239
 Attending physician 8,467 28 8,495
 Resident/fellow physician 30,799 70 30,869
 Advanced practice clinician 6,428 9 6,437
IUC insertions: All providers, no. 57,208 120 57,328 .002b
 Before simulation training 32,518 85 32,603
 After simulation training 24,690 35 24,725
Time IUC remained, hours < .001c
 Median 22.92 81.83 23.00
 25th percentile 5.90 45.08 6.00
 75th percentile 63.70 246.98 64.10

Abbreviations: CAUTI, catheter-associated urinary tract infection; IUC, indwelling urinary catheter; BMI, body mass index; ASA, American Society of Anesthesiologists.

a

Significance calculated with chi-square analysis, except as noted.

b

Fisher’s exact test.

c

Wilcoxon rank-sum test.