belt                   package:cat                   R Documentation

_D_a_t_a _o_n _d_r_i_v_e_r _i_n_j_u_r_y _a_n_d _s_e_a_t _b_e_l_t _u_s_e

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

     Data on driver injury and seat belt use.

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

     data(belt)

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

     The data frame 'belt.frame' contains the following columns:

     _I Injury to driver (I1=Reported by police, I2=Follow up

     _B Belt use (B1=Reported by police, B2=Follow up

     _D Damage to vehicle (high, low)

     _S Sex: Male or Female

     _F_r_e_q Count   .in -5 

_N_o_t_e:

     A matrix 'belt' with similarly named columns exists that can be
     input directly to functions which do not admit data frames. Both
     the data frame and matrix include all complete and incomplete
     cases, from the police reports and follow up study.

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

     Schafer (1996)  _Analysis of Incomplete Multivariate Data._
     Chapman & Hall, Section 7.4.3, which cites

     Hochberg, Y. (1977) On the use of double sampling schemes in
     analyzing categorical data with misclassification errors, _JASA_,
     vol. 71, p. 914-921.

