Question

Data for the cohort study were obtained from the population of all physicians listed in the British Medical Register who resided in England and Wales as of October 1951. Questionnaires were mailed in October 1951, to 59,600 physicians.

The questionnaire asked the physicians to classify themselves into one of three categories:
1) current smoker, 2) ex-smoker, or 3)nonsmoker.
Smokers and ex-smokers were asked the amount they smoked, their method of smoking, the age they started to smoke, and, if they had stopped smoking, how long it had been since they last smoked. Nonsmokers were defined as persons who had never consistently smoked as much as one cigarette a day for as long as one year.
Usable responses to the questionnaire were received from 40,637 (68%) physicians, of whom 34,445 were males and 6,192 were female. This study was limited to the analysis of male physician respondents, 35 years of age or older.
The following table shows numbers of lung cancer deaths by daily number of cigarettes smoked at the time of the 1951 questionnaire (for male physicians who were nonsmokers and current smokers only). Person-years of observation ("person-years at risk") are given for each smoking category. The number of cigarettes smoked was available for 136 of the persons who died from lung cancer.

Answer 1

Step-by-step explanation:

I apologize, but it seems that the table you mentioned is missing from the information provided. Without the specific numbers and values in the table, I cannot provide a detailed analysis or answer any questions related to the numbers of lung cancer deaths by daily number of cigarettes smoked.

If you have any other questions or need assistance with a different topic, please let me know, and I'll be happy to help.