ds07_IQ_and_Lead: Data Set 7: IQ and Lead Exposure

In ngay/kustats: Data sets and functions for statistics classes at Keiser University

Description

Data are measured from children in two consecutive years, and the children were living close to a lead smelter. Data are from "Neuropsychological Dysfunction in Children with Chronic Low-Level Lead Absorption, " by P.J. Landrigan, R.H. Whitworth, R.W. Baloh, N.W. Staehling, W.F. Barthel, and B.F. Rosenblum, Lancet, Vol. 1, Issue 7909.

• LEAD is blood lead level group [1=low lead level (blood lead levels < 40 micograms/100 mL in both years; 2 = medium lead level (blood lead levels >= 40 micrograms/100 mL in exactly one of the two years); 3 = high lead levels (blood lead levels >= 40 micrograms/100 mL in both years)].

• AGE is age in years

• SEX is sex of subject (1=male,2=female)

• YEAR1 is blood lead level in first year

• YEAR2 is blood lead level in second year

• IQ_VERB is measured verbal IQ score

• IQ_PERF is measured performance IQ score

• IQ_FULL is measured full IQ score

Format

A data frame with 121 rows and 8 variables

Source

Triola, M. 2018. Elementary Statistics, 13th ed. Boston, MA: Pearson.

ngay/kustats documentation built on May 23, 2019, 4:41 p.m.