Table 1. Prevalences of metabolic syndrome, its components and insulin resistance by sex among young adults with body mass index within the normal range, 1978/79 Ribeirão Preto birth cohort.

Variables	Males (n = 546)		Females (n = 676)		P a
	n	%	n	%
Metabolic Syndrome – JISb					0.004
No	529	96.9	670	99.1
Yes	17	3.1	6	0.9
Waist circumferencec					0.852
Normal	509	93.2	632	93.5
High	37	6.8	44	6.5
HDL-cholesterold					0.014
Normal	373	68.8	413	62.0
Low	169	31.2	253	38.0
Triglyceridese					0.439
Normal	509	93.9	618	92.8
High	33	6.1	48	7.2
Blood pressuref					<0.001
Normal	388	71.1	654	96.8
High	158	28.9	22	3.3
Blood Glucoseg					0.004
Normal	520	95.6	656	98.4
High	24	4.4	11	1.7
HOMA2-IRh					0.539
≤1.8	528	98.0	642	97.4
>1.8	11	2.0	17	2.6

Abbreviations: HDL, High Density Lipoprotein; HOMA, Homeostasis Model Assessment; IR, Insulin Resistance. ^aP value calculated by the chi-square test. ^bdefined according to the Joint Interim Statement (JIS) of the IDF Task Force on Epidemiology and Prevention, National Heart, Lung and Blood Institute, American Heart Association, World Heart Federation, International Atherosclerosis Society and International Association for the Study of Obesity. ^cwaist circumference (≥90 cm for men and ≥80 cm for women). ^dincreased triglycerides (≥150 mg/dL, use of lipid medications or self-reported diagnosis of hypertriglyceridemia). ^elow HDL-cholesterol (<40 mg/dL for men and <50 mg/dL for women). ^fincreased blood pressure (BP) (systolic pressure ≥130 mmHg and/or diastolic pressure ≥85 mmHg, current usage of antihypertensive drugs or previous diagnosis of hypertension). ^ghigh fasting blood glucose (≥100 mg/dL), current use of anti-diabetic medication or previously diagnosed diabetes. ^hCut-off point based on the Brazilian Metabolic Syndrome Study - BRAMS criterion (2009). Numbers may not add up to total because of missing values.