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. Author manuscript; available in PMC: 2009 May 26.

Published in final edited form as: Perit Dial Int. 2009;29(3):285–291.

Table 3.

Association of PD clinic size (>50 vs. ≤50 PD patients) with clinical outcomes

Outcome	Crude Rate	Model
Outcome	Crude Rate	Unadjusted	+Demographics	+Clinical	+Laboratory
Switching Modality toHD	*% switching*	*Relative Hazard (95% CI)*
≤50 PD patients	37.5%	1.00 (ref.)	1.00 (ref.)	1.00 (ref.)	1.00 (ref.)
>50 PD patients	9.7%	0.26 (0.14-0.50)^*	0.25 (0.13-0.48)^*	0.20 (0.10-0.42)^*	0.13 (0.06-0.31)^*
Cardiovascular Events	*Incidence per pt-yr*	*Relative Hazard (95% CI)*
≤50 PD patients	0.22	1.00 (ref.)	1.00 (ref.)	1.00 (ref.)	1.00 (ref.)
>50 PD patients	0.12	0.54 (0.35-0.84)^*	0.45 (0.29-0.70)^*	0.57 (0.35-0.93)^*	0.61 (0.38-0.98)^*
Cardiovascular Mortality	*Incidence per pt-yr*	*Relative Hazard (95% CI)*
≤50 PD patients	0.09	1.00 (ref.)	1.00 (ref.)	1.00 (ref.)	1.00 (ref.)
>50 PD patients	0.05	0.69 (0.33-1.44)	0.63 (0.30-1.34)	1.03 (0.45-2.34)	1.05 (0.46-2.40)
All-cause mortality	*Incidence per pt-yr*	*Relative Hazard (95% CI)*
≤50 PD patients	0.18	1.00 (ref.)	1.00 (ref.)	1.00 (ref.)	1.00 (ref.)
>50 PD patients	0.15	0.91 (0.57-1.46)	0.78 (0.48-1.26)	1.31 (0.76-2.24)	1.35 (0.78-2.35)

Demographics: age, sex, and race; clinical: ICED score, diabetic status, and BMI; laboratory: albumin and creatinine.

^*

P < 0.05.