wynder                package:gmvalid                R Documentation

_A_l_c_o_h_o_l, _S_m_o_k_i_n_g _a_n_d _O_r_a_l _C_a_n_c_e_r

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

     Alcohol drinking and smoking among cases of oral cancer and
     controls.

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

     data(wynder)

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

     A data frame with 443 observations on the following 3 variables.

     '_A_l_c' a numeric vector indicating the units of alcohol.

     '_S_m_o_k_i_n_g' a numeric vector indicating the units of smoked
          cigarettes.

     '_G_r_o_u_p' a numeric vector indicating whether the subject is
          "control" (1) or "case" (2).

_D_e_t_a_i_l_s:

     One unit of alcohol equals 1 oz (30 cc) of whiskey or 8 oz (237
     cc) of beer.

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

     Wynder EE, Bross IJ, Feldman R (1957) _A study of etiological
     factors in cancer of the mouth._ Cancer, 10:1300-1323.

_R_e_f_e_r_e_n_c_e_s:

     Rothman K (1974) _The estimation of synergy or antagonism._
     American Journal of Epidemiology, 103(5):506-511

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

       data(wynder)
       tab <- table(wynder)
       dimnames(tab) <- list(c("<1","1-6",">6"), c("<15","16-34",">34"), c("controls","cases"))  
       names(dimnames(tab)) <- c("Alcohol (unit/day)","Smoking (cigarettes/day)","Group")  
       tab

