Appropriate waist circumference cut points for identifying insulin resistance in black youth: a cross sectional analysis of the 1986 Jamaica birth cohort

Table 1 Characteristics of the study population by sex and insulin resistance category (highest sex-specific HOMA-IR quartile)

Characteristic	Men		Women
	Insulin Resistant (n = 74)	Insulin Sensitive (n = 241)	Insulin Resistant (n = 81)	Insulin Sensitive (n = 311)
Age (years)	19.3 ± 0.5	19.3 ± 0.5	19.3 ± 0.5	19.4 ± 0.5
Systolic Blood Pressure (mmHg)^{a, d}	115 ± 11	113 ± 10	110 ± 8	107 ± 8
Diastolic Blood Pressure (mmHg)	71 ± 10	69 ± 11	67 ± 9	67 ± 9
Body Mass Index (kg/m²)^{b, d}	25.5 ± 6.3	21.7 ± 3.1	27.5 ± 7.5	22.1 ± 4.5
Waist Circumference (cm)^{b, d}	80 ± 14	73 ± 9	83 ± 16	71 ± 10
Fasting glucose (mmol/L)^{b, d}	4.9 ± 0.5	4.7 ± 0.4	4.6 ± 0.4	4.4 ± 0.4
Total Cholesterol (mmol/L)^b	4.4 ± 1.0	4.0 ± 0.7	4.4 ± 0.9	4.5 ± 0.8
HDL-cholesterol (mmol/L)^{a, d}	1.1 ± 0.2	1.2 ± 0.3	1.2 ± 0.3	1.3 ± 0.3
Triglycerides (mmol/L)^{b, c}	0.7 ± 0.4	0.6 ± 0.2	0.6 ± 0.3	0.5 ± 0.2
LDL-cholesterol (mmol/L)^b	3.0 ± 0.9	2.6 ± 0.7	3.0 ± 0.9	2.9 ± 0.7
HOMA-IR†^{b, d}	1.2 (1.1, 1.5)	0.6 (0.5, 0.7)	1.8 (1.5, 2.0)	0.8 (0.6, 1.0)

^a P < 0.05 in men, ^b P < 0.01 in men ^c P < 0.05 in women, ^d P < 0.01 in women † - Median (25^th-75^th centile) - comparisons made using Wilcoxon Test

ISSN: 1758-5996