co.transfer package:boot R Documentation _C_a_r_b_o_n _M_o_n_o_x_i_d_e _T_r_a_n_s_f_e_r _D_e_s_c_r_i_p_t_i_o_n: The 'co.transfer' data frame has 7 rows and 2 columns. Seven smokers with chickenpox had their levels of carbon monoxide transfer measured on entry to hospital and then again after 1 week. The main question being whether one week of hospitalization has changed the carbon monoxide transfer factor. _U_s_a_g_e: co.transfer _F_o_r_m_a_t: This data frame contains the following columns: '_e_n_t_r_y' Carbon monoxide transfer factor on entry to hospital. '_w_e_e_k' Carbon monoxide transfer one week after admittance to hospital. _S_o_u_r_c_e: The data were obtained from Hand, D.J., Daly, F., Lunn, A.D., McConway, K.J. and Ostrowski, E (1994) _A Handbook of Small Data Sets_. Chapman and Hall. _R_e_f_e_r_e_n_c_e_s: Davison, A.C. and Hinkley, D.V. (1997) _Bootstrap Methods and Their Application_. Cambridge University Press. Ellis, M.E., Neal, K.R. and Webb, A.K. (1987) Is smoking a risk factor for pneumonia in patients with chickenpox? _British Medical Journal_, *294*, 1002.