DAAG (version 1.25.6)

cricketer: Lifespans of UK 1st class cricketers born 1840-1960

Description

Year and birth, lifespan, etc, of British first class cricketers, born 1840-1960, whose handedness could be determined from information in the Who's who of cricketers. The status (alive=0, dead =1), and lifetime or lifespan, is for 1992.

Usage

data(cricketer)

Format

A data frame with 5960 observations on the following 8 variables.

left

a factor with levels right left

year

numeric, year of birth

life

numeric, lifetime or lifespan to 1992

dead

numeric (0 = alive (censored), 1 = dead, in 1992)

acd

numeric (0 = not accidental or not dead, 1 = accidental death)

kia

numeric (0 = not killed in action, 1 = killed in action)

inbed

numeric (0 = did not die in bed, 1 = died in bed)

cause

a factor with levels alive acd (accidental death) inbed (died in bed)

Details

Note that those 'killed in action' (mostly during World Wars I and II) form a subset of those who died by accident.

References

Aggleton JP, Bland JM, Kentridge RW, Neave NJ 1994. Handedness and longevity: an archival study of cricketers. British Medical Journal 309, 1681-1684.

Bailey P, Thorne P, Wynne-Thomas P. 1993. Who's Who of Cricketers. 2nd ed, London, Hamlyn.

Bland M and Altman D. 2005. Do the left-handed die young? Significance 2, 166-170.

See Also

earlycrcktr.

Examples

data(cricketer)
numLH <- xtabs(~ left+year, data=cricketer)
propLH <- prop.table(numLH, margin=2)[2,]
yr <- as.numeric(colnames(numLH))
plot(propLH ~ yr)
cricketer$lh <- unclass(cricketer$left)-1
left2.hat <- fitted(lm(lh ~ poly(year,2), data=cricketer))
ord <- order(cricketer$year)
lines(left2.hat[ord] ~ cricketer$year[ord])
library(splines)
ns3.hat <- fitted(lm(lh ~ ns(year,3), data=cricketer))
lines(ns3.hat[ord] ~ cricketer$year[ord], col="red")
require(survival)
summary(coxph(Surv(life, kia) ~ bs(year,3) +left, data=cricketer))
cricketer$notacdDead <- with(cricketer, {dead[acd==1]<-0; dead})
summary(coxph(Surv(life, notacdDead) ~ ns(year,2) +left, data=cricketer))