cns                 package:faraway                 R Documentation

_M_a_l_f_o_r_m_a_t_i_o_n_s _o_f _t_h_e _c_e_n_t_r_a_l _n_e_r_v_o_u_s _s_y_s_t_e_m

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

     Frequencies of various malformations of the central nervous system
     recorded on live births in South Wales, UK. Study was designed to
     determine the effect of water hardness on the incidence of such
     malformations.

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

     data(cns)

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

     A data frame with 16 observations on the following 7 variables.

     _A_r_e_a a factor with levels 'Cardiff' 'GlamorganC' 'GlamorganE'
          'GlamorganW' 'MonmouthOther' 'MonmouthV' 'Newport' 'Swansea'
          being areas of South Wales

     _N_o_C_N_S count of births with no CNS problem

     _A_n count of Anencephalus births

     _S_p count of Spina Bifida births

     _O_t_h_e_r count of other CNS births

     _W_a_t_e_r water hardeness

     _W_o_r_k a factor with levels 'Manual' 'NonManual' being the type of
          work done by the parents

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

     C. Lowe and C. Roberts and S. Lloyd, (1971) Malformations of the
     central nervous system and softness of local water supplies,
     British Medical Journal, 15,357-361.

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

     P. McCullagh and J. Nelder (1989), Generalized Linear Models,
     Chapman and Hall, 2nd Ed.

