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Parameter Value Age (yr; mean ± SD) 59 ± 16 Male gender (%) 55 Race (%) White 82 Black 2 Asian 6 Other 10 Modality (% on CAPD) initial 74 most recent 52 Modality before PD start (%) new to dialysis 58 transfer from HD 24 failed transplant 3 other/unknown 15 Cause of ESRD diabetes 35 hypertension 17 glomerulonephritis 15 cystic kidney disease 5 other 27 Diabetes 40 ↵a CAPD, continuous ambulatory peritoneal dialysis; PD, peritoneal dialysis; HD, hemodialysis.
Parameter Negative Binomial Model Andersen-Gill Model RR 95% CI P HR 95% CI P Age (per decade) 1.04 1.01 to 1.08 0.010 1.03 1.01 to 1.06 0.025 Black 1.37 1.00 to 1.88 0.050 1.47 1.15 to 1.88 0.002 Asian 0.89 0.74 to 1.08 0.240 0.91 0.78 to 1.06 0.230 Diabetes female 1.27 1.10 to 1.47 0.001 1.31 1.17 to 1.48 <0.001 male 0.99 0.87 to 1.13 0.880 1.02 0.91 to 1.14 0.750 GN 0.87 0.75 to 1.00 0.050 0.86 0.76 to 0.97 0.015 Transfer from HD 1.24 1.11 to 1.38 <0.001 1.24 1.13 to 1.35 <0.001 Failed transplant 1.27 0.95 to 1.69 0.120 1.18 0.93 to 1.49 0.170 CAPD versusAPDb 1.03 0.91 to 1.16 0.650 1.02 0.92 to 1.13 0.690 - Table 3.
Comparison of peritonitis rates for several organism categories among subgroups of patients with higher overall peritonitis ratesa
Parameter Female Patients with Diabetes Transfer from HD Black RR 95% CI P RR 95% CI P RR 95% CI P Gram positive 1.33 1.09 to 1.62 0.005 1.26 1.08 to 1.46 0.003 1.72 1.15 to 2.56 0.010 Gram negative 1.04 0.77 to 1.40 0.780 1.12 0.89 to 1.42 0.350 1.39 0.73 to 2.64 0.320 Culture negative 1.37 1.04 to 1.81 0.027 1.19 0.96 to 1.49 0.120 0.70 0.31 to 1.57 0.390 CNS 1.25 0.95 to 1.63 0.110 1.33 1.09 to 1.62 0.005 1.41 0.80 to 2.47 0.240 Staphylococcus aureus 1.16 0.69 to 1.94 0.580 1.13 0.76 to 1.67 0.540 0.57 0.13 to 2.61 0.470 Streptococcus 1.57 1.06 to 2.32 0.026 1.16 0.84 to 1.60 0.370 2.75 1.35 to 5.59 0.005 ↵a CNS, coagulase-negative Staphylococcus.