deleval         package:surveillance         R Documentation(latin1)

_S_u_r_g_i_c_a_l _f_a_i_l_u_r_e_s _d_a_t_a

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

     The dataset from Steiner et al. (1999) on A synthetic dataset from
     the Danish meat inspection - useful for illustrating the
     beta-binomial CUSUM.

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

     data(abattoir)

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

     Steiner et al. (1999) use data from de Leval et al. (1994) to
     illustrate monitoring of failure rates of a surgical procedure for
     a bivariate outcome. 

     Over a period of six years an arterial switch operation was
     performed on 104 newborn babies. Since the death rate from this
     surgery was relatively low the idea of surgical "near miss" was
     introduced. It is defined as the need to reinstitute
     cardiopulmonary bypass after a trial period of weaning. The object
     of class 'sts' contains the recordings of near misses and deaths
     from the surgery for the 104 newborn babies of the study.

     The data could also be handled by a multinomial CUSUM model.

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

     Steiner, S. H., Cook, R. J., and Farewell, V. T. (1999),
     Monitoring paired binary surgical outcomes using cumulative sum
     charts, Statistics in Medicine, 18, pp. 69-86.

     De Leval, Marc R., Franiois, K., Bull, C., Brawn, W. B. and
     Spiegelhalter, D. (1994),  Analysis of a cluster of surgical
     failures, Journal of Thoracic and Cardiovascular Surgery, March,
     pp. 914-924.

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

     'pairedbinCUSUM'

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

     data("deleval")
     plot(deleval, xaxis.years=FALSE,ylab="Response",xlab="Patient number")

