nh0506: Smoking and homocysteine levels in NHANES 2005-2006.

Description Usage Format Details Source References Examples

Description

This is an example data set for makeblocks. For analysis of this data see Pimentel et al. (2016), Rosenbaum (2018).

Usage

1
data("nh0506")

Format

A data frame with 2475 observations on the following 19 variables.

SEQN

NHANES id number

female

1 if female, 0 if male

age

age in years, >=20

black

1 if black, 0 otherwise

hispanic

1 if hispanic, 0 otherwise

education

Education

povertyr

Ratio of family income to the poverty level, capped at 5x

creactiveprotein

creactive protein

homocysteine

homocysteine

cotinine

cotinine in blood

cadmium

cadmium in blood

lead

lead in blood

bmi

Body mass index

cigs100life

1 if smoked more than 100 cigarettes in lifetime, 0 otherwise

smokenow

1 if smokes now, 0 otherwise

cigsdays30

Days smoked in last 30 days: 0 if never smoker, 30 if daily smoker

cigsperday30

Cigarettes smoked per day in last 30 days

tobacco5days

1 = used tobacco in the last 30 days, 0 otherwise

dailysmoker

1 = daily smoker, 0 = never smoker

Details

Data from NHANES 2005-2006 concerning homocysteine levels in daily smokers and never smokers, aged 20 and older. Daily smokers smoked every day for the last 30 days, smoking an average of at least 10 cigarettes per day. Never smokers smoked fewer than 100 cigarettes in their lives, do not smoke now, and had no tobacco use in the previous 5 days.

Source

NHANES, the US National Health and Nutrition Examination Survey, 2005-2006.

References

Pimentel, S. D., Small, D. S. and Rosenbaum, P. R. (2016). Constructed second control groups and attenuation of unmeasured biases. Journal of the American Statistical Association, 111, 1157-1167.

Rosenbaum, P. R. (2018). Sensitivity analysis for stratified comparisons in an observational study of the effect of smoking on homocysteine levels. Annals of Applied Statistics, to appear.

Examples

1

blockingChallenge documentation built on Sept. 22, 2018, 1:05 a.m.