Table 1.

Demographic characteristics of the study population: volunteers from faculty and staff of Boston University Medical Center (Boston, MA, USA), recruited by email

	Mean or %	SD	Range
Age (years)	39·9	11·4	20–70
Height (m)	1·68	0·09	1·47-2·03
Height (in)	66·3	3·6	58–80
Weight (kg)	69·5	16·2	43·1–136·1
Weight (lb)	153·2	35·8	95–300
BMI (kg/m2)	24·4	5·5	16·0–51·5
Race/ethnicity (%)
Non-Hispanic white	80·2
Non-Hispanic black	2·6
His   panic white	2·6
Hispanic black	2·1
Asian	10·4
American Indian	0·5
Other	1·6