agefat                 package:HSAUR                 R Documentation

_T_o_t_a_l _B_o_d_y _C_o_m_p_o_s_i_s_i_o_n _D_a_t_a

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

     Age and body fat percentage of 25 normal adults.

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

     data("agefat")

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

     A data frame with 25 observations on the following 3 variables.

     '_a_g_e' the age of the subject.

     '_f_a_t' the body fat percentage.

     '_s_e_x' a factor with levels 'female' and 'male'.

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

     The data come from a study investigating a new methods of
     measuring body  composition (see Mazess et al, 1984), and give the
     body fat percentage  (percent fat), age and sex for 25 normal
     adults aged between 23 and 61 years.   The questions of interest
     are how are age and percent fat related, and is  there any
     evidence that the relationship is different for males and females.

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

     R. B. Mazess, W. W. Peppler and M. Gibbons (1984), Total body
     composition by  dual-photon (153Gd) absorptiometry. _American
     Journal of Clinical Nutrition_,  *40*, 834-839.

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

       data("agefat", package = "HSAUR")
       plot(fat ~ age, data = agefat)

