crossover                package:pad                R Documentation

_P_A_D  -  _A_s_t_h_m_a _d_a_t_a

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

     The 'crossover' data frame has 13 rows and 4 columns.

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

     data(crossover)

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

     This data frame contains the following columns:

     _s_e_q_u_e_n_c_e a factor with levels indicating  the sequence of 
          administration of drugs:

         'FS  ' Formoterol first and Salbutamol second

         'SF  ' Salbutamol first and Formotemol second

     _p_a_t_i_e_n_t a factor with patient identifier

     _P_E_F_1 a numeric vector with measurements of the lung function in
          period one

     _P_E_F_2 a numeric vector with  measurements of the lung  function in
          period two

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

     This data-set gives the results of a crossover trial into the
     effectiveness of two proprietary medicines used to treat chronic
     asthma. The medicines are Formoterol (F) and Salbutamol (S). Each
     patient receives both treatments in sequence, with an intervening
     "washout" period intended to ensure that the drug received in
     period 1 has no residual effect during period 2. The resonse is a
     measure of lung function, peak expiratory flow (PEF), 8 hours
     after treatment.

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

     Supplied by Prof S. Senn (University College, London, UK).

