. 2011 Sep 8;6(9):e24690. doi: 10.1371/journal.pone.0024690

Table 2. Metabolic variables by ethnic group and environment.

	Mapuche		European		p value
	Rural	Urban	Rural	Urban	Ethn	Env	Ethn x Env Interaction
Systolic Blood Pressure (mmHg)	120.3±15.3	124.3±17.9	120.7±16.7	123.7±16.9	0.356	0.001	0.948
Diastolic Blood Pressure (mmHg)	76.6±11.8	75.7±12.6	75.5±12.0	75.8±11.9	0.300	0.776	0.503
Glucose (mmol.l⁻¹)	5.28±1.21	5.42±1.40	5.26±0.93	5.79±1.03	(0.428)	0.001	0.049
Insulin (pmol.l⁻¹)^a	6.7±8.5	20.7±15.8	3.4±2.3	5.9±4.6	(0.0001)	(0.0001)	0.0002
HOMA_IR ^a	1.65±2.03	4.90±3.05	0.82±0.61	1.55±1.34	(0.0001)	(0.0001)	0.0003
Triglyceride (mmol.l⁻¹)	1.05±0.45	1.36±0.68	1.21±0.54	1.23±0.75	0.569	0.0005	0.154
Total cholesterol (mmol.l⁻¹)	4.51±1.00	4.76±1.27	4.73±1.33	4.79±1.20	0.868	0.019	0.554
HDL cholesterol (mmol.l⁻¹)	1.08±0.40	0.90±0.37	0.95±0.40	0.90±0.36	0.607	0.0001	0.170
LDL cholesterol (mmol.l⁻¹)	2.95±1.08	3.24±1.37	3.23±1.42	3.32±1.30	0.900	0.009	0.520
Leptin (ng.ml⁻¹)	9.79±8.0	19.4±14.2	8.92±7.04	13.2±14.0	0.0007	0.0001	0.026
GGT (U.L⁻¹)^a	31.3±19.1	50.4±41.7	27.1±17.4	30.7±24.4	0.0001	0.0001	0.099
ALT (U.L⁻¹)^a	3.60±0.65	3.37±0.65	3.45±0.55	3.36±0.68	0.159	0.061	0.186
HsCRP (mg.l⁻¹)^a	1.04±1.08	1.43±1.56	1.23±1.22	1.56±1.48	0.416	0.002	0.612

Data are presented as mean ± SD. Statistical analysis was undertaken on age- and sex-adjusted data. p values shown are for comparisons of means between Rural Mapuche, Urban Mapuche, Rural European and Urban European groups for main effects of ethnicity (Ethn) and of environment (Env), and the Ethnicity x environment (Ethn x Env) interaction effect: for the main effects, those in parentheses indicate residual main effects in a model with a significant interaction term, while those not in parentheses indicate main effects in a model without the interaction term. Significant p values (i.e. p<0.004) are shown in bold. ^a Statistical analyses performed on log-transformed data.