toothpaste               package:HSAUR               R Documentation

_T_o_o_t_h_p_a_s_t_e _D_a_t_a

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

     Meta-analysis of studies comparing two different toothpastes.

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

     data("toothpaste")

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

     A data frame with 9 observations on the following 7 variables.

     '_S_t_u_d_y' the identifier of the study.

     '_n_A' number of subjects using toothpaste A.

     '_m_e_a_n_A' mean DMFS index of subjects using toothpaste A.

     '_s_d_A' standard deviation of DMFS index of subjects  using
          toothpaste A.

     '_n_B' number of subjects using toothpaste B.

     '_m_e_a_n_B' mean DMFS index of subjects using toothpaste B.

     '_s_d_B' standard deviation of DMFS index of subjects  using
          toothpaste B.

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

     The data are the results of nine randomised trials comparing two
     different toothpastes for the prevention of caries development.
     The outcomes in each trial was the change, from baseline, in the
     decayed, missing (due to caries) and filled surface dental index
     (DMFS).

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

     B. S. Everitt and A. Pickles (2000),  _Statistical Aspects of the
     Design and Analysis of Clinical Trials_, Imperial College Press,
     London.

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

       data("toothpaste", package = "HSAUR")
       toothpaste

