Distribution of and factors contributing to chronic kidney disease in a middle-aged working population

Table 2 Distribution of basic characteristics possibly related to the development of chronic kidney disease the male and female subjects observed in 2003

Characteristics	35–44 years^a		45–54 years^a		55–64 years^a		Total
Characteristics	Male (n = 1,204)	Female (n = 630)	Male (n = 1,559)	Female (n = 1,232)	Male (n = 1,201)	Female (n = 836)	Male (n = 3,964)	Female (n = 2,698)
Obesity (BMI, mL/min/1.73 m²)^b
Mild	19.4	7.1	25.9	14.0	27.8	16.5	24.5	13.2
Marked	4.7	1.4	3.2	2.3	1.7	2.0	3.2	2.0
Health conditions^b
Hypertension	13.2	2.7	25.3	9.7	34.2	22.8	24.3	12.2
DM	1.8	0.5	5.3	1.6	11.1	3.1	6.0	1.8
hChol	19.1	10.0	30.8	21.3	30.7	42.5	27.2	25.2
hTG	17.8	2.4	23.9	3.2	20.1	5.9	20.9	3.9
lHDLc	9.1	1.9	7.9	1.9	9.5	1.4	8.8	1.7
Cigarette smoking
Ex-smoker	14.8	2.5	26.0	1.5	28.6	2.0	23.4	1.9
Smoke up to 1 pack/day	44.0	9.5	35.1	8.8	31.1	9.7	36.6	9.2
Smoke more	13.3	0.2	17.1	0.4	20.6	0.5	17.0	0.4
Alcohol consumption
Drink up to 29 mL/day	40.5	23.8	33.2	24.3	31.6	21.8	34.9	23.4
30–59 mL/day	15.0	3.2	25.0	3.3	24.4	3.1	21.8	3.2
60 mL/day or more	8.5	1.3	15.2	0.9	21.1	1.2	14.9	0.4
Occupation
Clerk	23.2	51.4	29.1	38.0	20.3	24.6	24.6	37.0
Manager/professional	23.5	19.2	30.5	24.4	30.8	17.7	28.5	21.1
Sales/service	21.9	16.0	14.0	24.3	11.1	36.6	15.5	26.2
Operator/driver	29.5	9.8	25.4	11.2	35.6	17.9	29.7	13.0
Miscellaneous	1.8	3.5	1.0	2.1	2.2	3.1	1.6	2.7

DM Diabetes mellitus, hChol hypercholesterolemia [a Tchol (total cholesterol of ≥220 mg/dL], hTG hypertriglyceridemia, iHDLc hypo-HDL-cholesterolemia
Data are presented as the prevalence (%)
^aSubjects who were aged 35–44, 45–54, and 55–64 years in 2009 were aged 29–38, 39–48, and 49–58 years, respectively, in 2003
^bFor the definitions of the health conditions, refer to section Data collection

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