toxop                  package:VGAM                  R Documentation

_T_o_x_o_p_l_a_s_m_o_s_i_s _D_a_t_a

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

     Toxoplasmosis data in 34 cities in El Salvador.

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

     data(toxop)

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

     A data frame with 34 observations on the following 4 variables.

     '_r_a_i_n_f_a_l_l' a numeric vector; the amount of rainfall in each city.

     '_s_s_i_z_e' a numeric vector; sample size.

     '_c_i_t_y_N_o' a numeric vector; the city number.

     '_p_o_s_i_t_i_v_e' a numeric vector; the number of subjects testing
          positive for the disease. 

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

     See the references for details.

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

     See the references for details.

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

     Efron, B. (1978) Regression and ANOVA With zero-one data: measures
     of residual variation. _Journal of the American Statistical
     Association_, *73*, 113-121.

     Efron, B. (1986) Double exponential families and their use in
     generalized linear regression. _Journal of the American
     Statistical Association_, *81*, 709-721.

_S_e_e _A_l_s_o:

     'dexpbinomial'.

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

     data(toxop)
     ## Not run: 
     with(toxop, plot(rainfall, positive/ssize, col="blue"))
     plot(toxop, col="blue")
     ## End(Not run)

