Japan Diabetes Outcome Intervention Trial-1(J-DOIT1), a nationwide cluster randomized trial of type 2 diabetes prevention by telephone-delivered lifestyle support for high-risk subjects detected at health checkups: rationale, design, and recruitment

Table 3 Components of metabolic syndrome by randomized intervention assignment and sex

Variables	Control arm				Intervention arm
	Men		Women		Men		Women
	(n=1279		(n=225)		(n=1119)		(n=217)
1. BMI ≥ 25 kg/m²	479	37.5%	67	29.8%	456	40.8%	66	30.4%
2. Hypertension	580	45.3%	75	33.3%	514	45.9%	66	30.4%
3. TG ≥ 150 mg/dl	429	33.5%	30	13.3%	360	32.2%	29	13.4%
4. HDL<40 mg/dl in men, <50 mg/dl in women	77	6.0%	27	12.0%	76	6.8%	24	11.1%
5. Hyperglycemia	1279	100.0%	225	100.0%	1119	100.0%	217	100.0%
Risk factors of metabolic syndrome
1 factor	365	28.5%	99	44.0%	299	26.7%	97	44.7%
2 factors	416	32.5%	71	31.6%	359	32.1%	66	30.4%
≥3 factors	496	38.8%	55	24.4%	459	41.0%	53	24.4%

Data are number or percentage. Five subjects were excluded from the analyses because of missing data except for fasting plasma glucose.

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