Data frame:nhgh

6795 observations and 20 variables, maximum # NAs:971

Name	Labels	Units	Levels	Class	Storage	NAs
seqn	Respondent sequence number			integer	integer	0
sex			2		integer	0
age	Age	years		numeric	double	0
re	Race/Ethnicity		5		integer	0
income	Family Income		14		integer	320
tx	On Insulin or Diabetes Meds			integer	integer	0
dx	Diagnosed with DM or Pre-DM			integer	integer	0
wt	Weight	kg		numeric	double	0
ht	Standing Height	cm		numeric	double	0
bmi	Body Mass Index	kg/m^2		numeric	double	0
leg	Upper Leg Length	cm		numeric	double	231
arml	Upper Arm Length	cm		numeric	double	179
armc	Arm Circumference	cm		numeric	double	188
waist	Waist Circumference	cm		numeric	double	239
tri	Triceps Skinfold	mm		numeric	double	481
sub	Subscapular Skinfold	mm		numeric	double	971
gh	Glycohemoglobin	%		numeric	double	0
albumin	Albumin	g/dL		numeric	double	89
bun	Blood urea nitrogen	mg/dL		integer	integer	89
SCr	Creatinine	mg/dL		numeric	double	89

Category Levels

sex

male
female

re

Mexican American
Other Hispanic
Non-Hispanic White
Non-Hispanic Black
Other Race Including Multi-Racial

income

[0,5000)
[5000,10000)
[10000,15000)
[15000,20000)
[20000,25000)
[25000,35000)
[35000,45000)
[45000,55000)
[55000,65000)
[65000,75000)
> 20000
< 20000
[75000,100000)
>= 100000