femsmoke               package:faraway               R Documentation

_M_o_r_t_a_l_i_t_y _d_u_e _t_o _s_m_o_k_i_n_g _a_c_c_o_r_d_i_n_g _a_g_e _g_r_o_u_p _i_n _w_o_m_e_n

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

     In 1972-74, a survey of one in six residents of Whickham, near
     Newcastle, England was made. Twenty years later, this data
     recorded in a follow-up study. Only women who are current smokers
     or who have never smoked are included.

_U_s_a_g_e:

     data(femsmoke)

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

     A data frame with 28 observations on the following 4 variables.

     _y observed count for given combination

     _s_m_o_k_e_r a factor with levels 'yes' 'no'

     _d_e_a_d a factor with levels 'yes' 'no'

     _a_g_e a factor with agegroup levels '18-24' '25-34' '35-44' '45-54'
          '55-64' '65-74' '75+'

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

     D. Appleton, J. French, M. Vanderpump (1996) "Ignoring a
     Covariate: An Example of Simpson's Paradox" American Statistician,
     50, 340-341

