cgd package:survival R Documentation _C_h_r_o_n_i_c _G_r_a_n_u_l_o_t_o_m_o_u_s _D_i_s_e_a_s_e _d_a_t_a _D_e_s_c_r_i_p_t_i_o_n: Data are from a placebo controlled trial of gamma interferon in chronic granulotomous disease (CGD). Uses the complete data on time to first serious infection observed through end of study for each patient, which includes the initial serious infections observed through the 7/15/89 interim analysis data cutoff, plus the residual data on occurence of initial serious infections between the interim analysis cutoff and the final blinded study visit for each patient. Only one patient was taken off on the day of his last infection. _U_s_a_g_e: cgd _F_o_r_m_a_t: id: subject identifiction number center: enrolling center random: date of randomization treatment: placebo or gamma interferon sex: age: age in years, at study entry height: height in cm at study entry weight: weight in kg at study entry inherit: pattern of inheritance steroids: use of steroids at study entry,1=yes propylac: use of prophylactic antibiotics at study entry hos.cat: a categorization of the centers into 4 groups tstart, tstop: start and end of each time interval status: 1=the interval ends with an infection enum: observation number within subject _S_o_u_r_c_e: Fleming and Harrington, Counting Processes and Survival Analysis, appendix D.2.