Table 3.

Multivariate logistic regression analysis of factors associated with hospitalization during the first year of registry participation^a

Variable	Odds Ratio	95% Confidence Interval
Anemia
yes (HCT < 33%)	1.55	1.23 to 1.54b
no (HCT ≥ 33%)	1.00	—
Height z-score	0.89	0.83 to 0.95b
Primary diagnosis
dysplasia	0.50	0.34 to 0.72b
reflux nephropathy	1.16	0.80 to 1.68
FSGS	0.63	0.40 to 0.98c
other	0.83	0.63 to 1.09
obstructive uropathy	1.00	—
Erythropoietin use
yes	1.51	1.11 to 2.07c
no	1.00	—
Race
African-American	1.45	1.11 to 1.90b
Hispanic	1.26	0.93 to 1.69
other/unknown	0.85	0.50 to 1.44
Caucasian	1.00	—
Cohort year
1994 to 1997	1.31	1.04 to 1.65
1998 to 2004	1.00	—
Albumin	0.72	0.61 to 0.86b

^aFactors included in the multivariate analysis include: albumin, CKD stage, primary diagnosis, cohort year, height z-score, weight z-score, parathyroid hormone, calcium, phosphorus, anemia, antihypertensive medication use, iron supplementation, growth hormone use, and erythropoietin use.

^bP value < 0.005;

^cP value < 0.05.