Bus_workers: Coronary heart disease in London transport workers

In dtkaplan/mdsint: Internal resources for Modeling for Data Science

Description

In the 1950s, epidemiologist Jerry Morris explored the hypothesis that lack of exercise is associated with higher levels of coronary heart disease. One of his first systematic observations of this was the different levels of disease in bus drivers (who sit while they work) and bus conductors (who, in the double-decker London busses, go up and downstairs frequently while collecting tickets). These data are a reverse-engineered version of the summary provided in the main table of Morris's paper.

Usage

data(Bus_workers)

Format

24937 transport workers in London busses.

• age – age of the worker in 1949-1950

• job – whether the worker was a bus driver or conductor

• event – whether the worker presented with medical symptoms of coronary heart disease

• day3 – whether the worker survived the first 3 days after the onset of symptoms

• month3 – whether the worker survived the first 3 months after the onset of symptoms

• year3 – whether the worker survived the first 3 years after the onset of symptoms. Note that a worker who died in the first three days by necessity failed to survive the first three months or years. Workers who did not have an attack are listed as having survived the three years of follow-up.

Source

The summary data are in J.N. Morris and P.A.B. Raffle (1954) "Coronary heart disease in transport workers: A progress report" Brit. J. industr. Med., 11:260-264

dtkaplan/mdsint documentation built on May 28, 2019, 7:55 p.m.