HSAUR2 (version 1.1-17)

backpain: Driving and Back Pain Data

Description

A case-control study to investigate whether driving a car is a risk factor for low back pain resulting from acute herniated lumbar intervertebral discs (AHLID).

Usage

data("backpain")

Format

A data frame with 434 observations on the following 4 variables.

ID

a factor which identifies matched pairs.

status

a factor with levels case and control.

driver

a factor with levels no and yes.

suburban

a factor with levels no and yes indicating a suburban resident.

Details

These data arise from a study reported in Kelsey and Hardy (1975) which was designed to investigate whether driving a car is a risk factor for low back pain resulting from acute herniated lumbar intervertebral discs (AHLID). A case-control study was used with cases selected from people who had recently had X-rays taken of the lower back and had been diagnosed as having AHLID. The controls were taken from patients admitted to the same hospital as a case with a condition unrelated to the spine. Further matching was made on age and sex and a total of 217 matched pairs were recruited, consisting of 89 female pairs and 128 male pairs.

Examples

# NOT RUN {
  data("backpain", package = "HSAUR2")
  summary(backpain)

# }