Table 1.

Characteristics of participants from the population-based TwinGene project within the Swedish Twin Registry

Characteristic	All		Men		Women
	N	Mean±SD	N	Mean±SD	N	Mean±SD
Age, yr	9442	65±8	4183	65±8	5259	65±8
Waist circumference, inch	9379	36±5	4158	38±4	5221	34±5
Glucose, mg/dl	9438	100±21	4182	104±24	5256	98±19
Triglycerides, mg/dl	9440	119±72	4182	126±81	5258	115±63
HDL, mg/dl	9441	55±16	4183	48±13	5258	60±16
Systolic BP, mm Hg	8959	139±20	3955	139±19	5004	138±20
Diastolic BP, mm Hg	8958	82±11	3954	83±11	5004	81±10
Creatinine, mg/dl	9442	0.9±0.3	4183	1.0±0.3	5259	0.8±0.2
Cystatin C, mg/L	9442	1.01±0.26	4183	1.04±0.27	5259	0.99±0.24
eGFR, ml/min per 1.73 m2	9442	76±19	4183	77±20	5259	76±18

eGFR calculated by the cystatin C–based equations from the CKD Epidemiology Collaboration group.