secretin                package:ISwR                R Documentation

_S_e_c_r_e_t_i_n-_i_n_d_u_c_e_d _b_l_o_o_d _g_l_u_c_o_s_e _c_h_a_n_g_e_s

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

     The 'secretin' data frame has 50 rows and 6 columns. It contains
     data from a glucose response experiment.

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

     secretin

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

     This data frame contains the following columns:

     '_g_l_u_c' a numeric vector, blood glucose level.

     '_p_e_r_s_o_n' a factor with levels 'A'-'E'.

     '_t_i_m_e' a factor with levels '20', '30', '60', '90'  (minutes since
          injection), and 'pre' (before injection).

     '_r_e_p_l' a factor with levels {'a': 1st sample}; {'b': 2nd sample}.

     '_t_i_m_e_2_0_p_l_u_s' a factor with levels {'20+': 20 minutes or longer
          since injection}; {'pre': before injection.}

     '_t_i_m_e._c_o_m_b' a factor with levels {'20':  20 minutes since
          injection}; {'30+': 30 minutes or longer since injection};
          {'pre': before injection.  }

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

     Secretin is a hormone of the duodenal mucous membrane. An extract
     was administered to five patients with arterial hypertension.
     Primary registrations (double determination) of blood glucose were
     on graph paper and later quantified with the smallest of the two
     measurements recorded first.

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

     Anon. (1977), _Exercises in Applied Statistics_, Exercise 5.8,
     Dept. of Theoretical Statistics,   Aarhus University.

