Table 4. Estimated glomerular filtration rate in patients at entry.

GFRa (ml/min/1.73m2)	Male	Female	Total
	n = 100	n = 302	n = 402
>60*	51 (41, 61)	36 (31, 42)	40 (35, 45)
30–60	47 (37, 57)	57 (51, 62)	54 (49, 59)
15–30	2 (0, 5)	7 (4, 10)	6 (3, 8)
<15	0.0	0.0	0.0

Abbreviation: GFR, glomerular filtration rate.

Results indicate percentages.

Parentheses indicate 95% confidence interval.

^*indicates a statistically significant association with gender (p value<0.05).