Table 3.

Effect of patient subgroups on incidence rate ratio of CLABSI in the post- vs. pre-repair period, adjusted for days off antibiotics

Characteristic	IRRa	95% CI	P valueb
Age:
≤3 years	3.73	0.88 – 15.72	0.31
>3 years	4.49	0.98 – 20.63
Primary diagnosis:
Cancer	3.95	1.16 – 13.51	0.65
Short bowel syndrome	11.82	0.77 – 181.88
Immunocompromised:
Yes	4.05	1.20 – 13.67	0.91
No	4.15	0.55 – 31.61
Parenteral nutrition:
Yes	3.93	0.97 – 15.83	0.89
No	4.27	0.88 – 20.60
Catheter Type:
PICCc	0	NA	0.28
Tunneled	4.25	1.46 – 12.37
Repair Type:
Glued	5.24	1.14 – 24.09	0.81
Glue-less	3.42	0.65 – 17.91

IRR = Incidence rate ratio, PICC = peripherally inserted central catheter

^aWithin-patient incidence rate ratio based on conditional Poisson regression for matched data for subgroups

^bBased on Wilcoxon rank sum test of comparison of median incidence rate differences between two groups

^cThere were no infections in the post-repair period for PICC, therefore confidence intervals could not be generated.