BMC Nephrology

Table 2 Incidence densities of chronic kidney disease in heart disease cohort and comparison cohort and rate ratios by sociodemographic characteristics and baseline comobidities

From: The risk for chronic kidney disease in patients with heart diseases: a 7-year follow-up in a cohort study in Taiwan

	Heart Disease
	No				Yes
	Case	Person-year	Rate^†		Case	Person-year	Rate^†	Ratio
All	352	364,887	9.65		714	180,736	39.51	4.10
Sex
Female	125	173,553	7.20		311	96,370	32.27	4.48
Male	227	191,335	11.86		403	84,367	47.77	4.03
Age, years
< 40	6	79,454	0.76		32	39,618	8.08	10.70
40-49	44	73,240	6.01		90	36,416	24.71	4.11
50-59	69	74,360	9.28		132	36,853	35.82	3.86
≥ 60	233	137,834	16.90		460	67,850	67.80	4.01
Occupation
White collar	101	143,047	7.06		200	69,951	28.59	4.05
Blue collar	169	145,810	11.59		320	72,524	44.12	3.81
Others	82	76,030	10.79		194	38,261	50.70	4.70
Urbanization^‡
Low	65	55,349	11.74		134	27,496	48.73	4.15
Moderate	67	71,393	9.38		154	35,819	42.99	4.58
High	220	238,146	9.24		426	117,413	36.28	3.93
Region^‡
North	125	161,939	7.72		289	78,784	36.68	4.75
Central	63	70,161	8.98		157	39,248	40.00	4.45
South	121	99,742	12.13		186	46,492	40.01	3.30
East and Island	43	33,045	13.01		82	16,205	50.60	3.89
Monthly income (NTD)
<15,000	187	163,776	11.42		386	81,452	47.39	4.15
15,000-29,999	135	140,693	9.60		280	72,062	38.86	4.05
≥30,000	30	60,418	4.97		48	27,222	17.63	3.55
DM^§
No	275	343,556	8.00		404	149,045	27.11	3.39
Yes	77	21,331	36.10		310	31,691	97.82	2.71
Hypertension^§
No	221	317,675	6.96		133	87,930	15.13	2.17
Yes	131	47,212	27.75		581	92,806	62.60	2.26
Hyperlipidemia^§
No	287	332,801	8.62		433	131,402	32.95	3.82
Yes	65	32,086	20.26		281	49,334	56.96	2.81

^†per 10,000 person-year.
^‡1 observation of Heart Disease patients is missing.
^§The dates of diagnosis of DM, Hypertension, and Hyperlipidemia were before December 31, 2001.

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ISSN: 1471-2369

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