Prevalence of the metabolic syndrome and its relationship with diabetes mellitus by aging

Figures & data

Table I. The prevalences of medication for DM, hypertension and dyslipidemia, and those of metabolic syndrome and its components stratified by the age group (n=3149).

	30–39 years, n=337	40–49 years, n=951	50–59 years, n=1216	60–69 years, n=645	p for trend
DM treatment	1.8%	2.3%	5.1%*	5.4%*	<0.001
HT treatment	2.7%	8.3%*	25.7%*	34.6%*	<0.001
DL treatment	2.1%	4.7%	11.6%*	14.3%*	<0.001
MetS	19.9%	27.8%*	37.5%*	39.8%*	<0.001
WC	43.9%	48.5%	51.1%	49.5%	ns
Glucose	32.9%	36.7%	48.4%*	58.3%*	<0.001
Blood pressure	24.9%	34.6%*	46.7%*	53.8%*	<0.001
TG	29.1%	35.3%	38.9%*	35.3%	<0.05
HDLC	13.4%	14.0%	20.0%*	23.1%*	<0.001
DM diagnosis	11.9%	14.0%	19.7%*	19.8%*	<0.001

DM, diabetes mellitus; HT, hypertension; DL, dyslipidemia; MetS, metabolic syndrome; WC, waist circumference; TG, triglyceride; HDLC, high-density lipoprotein cholesterol; p for trend was checked by Cochran–Armitage test.

*p<0.05 against prevalence in 30s by Dunnett's multiple comparisons.

Table II. Multivariate odds ratios for diabetes mellitus determined by logistic regression analysis, according to the age group and presence/absence of metabolic syndrome, adjusted for the smoking habit, drinking habit and exercise habit.

Age	MetS	Odds ratio	95% CI	Significance
30–39	No	1
	Yes	5.83	1.94, 17.48	p <0.01
40–49	No	0.80	0.30, 2.17	ns
	Yes	7.62	3.15, 18.42	p <0.001
50–59	No	2.12	0.88, 5.15	ns
	Yes	12.14	5.21, 28.29	p <0.001
60–69	No	4.96	2.03, 12.12	p <0.001
	Yes	12.24	5.10, 29.39	p <0.001

ns, not significant; CI, confidence interval.

Significant differences against 30s with no MetS were checked.