def p_control_subs(c_pos, c_neg):
    """
    Calculate proportion of positive outcomes under control condition
    :param c_pos: Positive results in Control group 
    :param c_neg: Negative results in Control group
    :return p_control: Proportion of subjects w/ positive outcome under control condition
    """
    total = c_pos+c_neg
    p_control = c_pos/total
    return p_control