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Hemoglobin Levels in High Altitude Populations

Hemoglobin.Rd

Relative rates of hemoglobin concentration in four populations of humans living at different altitudes.

Usage

Hemoglobin

Format

A data frame with 40 observations on the following 3 variables.

hemoglobin

a numeric vector

group

a factor with levels: Andes, Ethiopia, Tibet, and USA

relative.frequency

a numeric vector

Source

inferred from Beall, C.M., M.J. Decker, G.M. Bittenham, I. Kushner, A. Gebremedhin, K.P. Strohl. 2002. An Ethiopian pattern of human adaptation to high-altitude hypoxia. Proceeding of the National Academy of Sciences (USA) 99(26): 17215-17218.

References

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC139295/

Examples


str(Hemoglobin)
#> 'data.frame':	40 obs. of  3 variables:
#>  $ hemoglobin        : int  11 12 13 14 15 16 17 18 19 11 ...
#>  $ group             : Factor w/ 4 levels "Andes","Ethiopia",..: 2 2 2 2 2 2 2 2 2 3 ...
#>  $ relative.frequency: num  0 0.01 0.05 0.18 0.32 0.24 0.19 0.01 0 0 ...

xyplot(relative.frequency ~ hemoglobin | group, Hemoglobin,
  type ='h', lwd=4, layout=c(1,4))