diet                   package:Epi                   R Documentation

_D_i_e_t _a_n_d _h_e_a_r_t _d_a_t_a

_D_e_s_c_r_i_p_t_i_o_n:

     The 'diet' data frame has 337 rows and 14 columns. The data
     concern a subsample of subjects drawn from larger cohort studies
     of the incidence of coronary heart disease (CHD). These subjects
     had all completed a 7-day weighed dietary survey while taking part
     in validation studies of dietary questionnaire methods. Upon the
     closure of the MRC Social Medicine Unit, from where these studies
     were directed, it was found that 46 CHD events had occurred in
     this group, thus allowing a serendipitous study of the
     relationship between diet and the incidence of CHD.

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

      id: subject identifier, a numeric vector 

     doe: date of entry into follow-up study, a date 

     dox: date of exit from the follow-up study, a date 

     dob: date of birth, a date 

    fail: status on exit, a numeric vector (codes 1, 3, 11, and 13
          represent CHD events) 

     job: occupation, a factor with levels 'Driver'  'Conductor'  'Bank
          worker'  

   month: month of dietary survey, a numeric vector 

  energy: total energy intake (KCal per day/100), a numeric vector 

  height: (cm), a numeric vector 

  weight: (kg), a numeric vector 

     fat: fat intake (g/day), a numeric vector 

   fibre: dietary fibre intake (g/day), a numeric vector 

energy.grp: high daily energy intake, a factor with levels '<=2750
          KCal' '>2750 KCal' 

     chd: CHD event, a numeric vector (1=CHD event, 0=no event) 

_F_o_r_m_a_t:

     This data frame contains the following columns:

_S_o_u_r_c_e:

     The data are described and used extensively by Clayton and Hills,
     Statistical Models in Epidemiology, Oxford University Press,
     Oxford:1993. They were rescued from destruction by David Clayton
     and reentered from paper printouts.

_E_x_a_m_p_l_e_s:

     data(diet)

