

breslow(boot)                                R Documentation

_S_m_o_k_i_n_g _D_e_a_t_h_s _A_m_o_n_g _D_o_c_t_o_r_s

_A_r_g_u_m_e_n_t_s_:

     age: The mid-point of the 10 year age-group for the
          doctors.

   smoke: An indicator of whether the doctors smoked (1) or
          not (0).

       n: The number of person-years in the category.

       y: The number of deaths attributed to coronary artery
          disease.

      ns: The number of smoker years in the category
          (`smoke*n').

_S_U_M_M_A_R_Y_:

     The `breslow' data frame has 10 rows and 5 columns.

     In 1961 Doll and Hill sent out a questionnaire to all
     men on the British Medical Register enquiring about
     their smoking habits. Almost 70% of such men replied.
     Death certificates were obtained for medical practi-
     tioners and causes of death were assigned on the basis
     of these certificates.  The `breslow' data set contains
     the person-years of observations and deaths from coro-
     nary artery disease accumulated during the first ten
     years of the study.

_D_A_T_A _D_E_S_C_R_I_P_T_I_O_N_:

     This data frame contains the following columns:

_S_O_U_R_C_E_:

     The data were obtained from

     Breslow, N.E. (1985) Cohort Analysis in Epidemiology.
     In A Celebration of Statistics A.C. Atkinson and S.E.
     Fienberg (editors), 109-143.  Springer-Verlag.

_O_T_H_E_R _R_E_F_E_R_E_N_C_E_S_:

     Davison, A.C. and Hinkley, D.V. (1997) Bootstrap Meth-
     ods and Their Application. Cambridge University Press.

     Doll, R. and Hill, A.B. (1966) Mortality of British
     doctors in relation to smoking: Observations on coro-
     nary thrombosis.  National Cancer Institute Monograph,
     19, 205-268.

