Statistics on the Wage of Persons with Disabilities SAMPLING ERRORS: COEFFICIENT OF VARIATION FOR THE VARIABLE 'GROSS EARNING PER WORKER' Type of Working Day Units: coefficient of variation Total Persons without disabilities Persons with disabilities Total 0.42 0.43 2.43 Full-time 0.49 0.50 2.63 Part-time 1.24 1.27 4.94 Notes: 1) Persons with disabilities refers to persons formally recognised as disabled, with a degree of dissability of 33% or over, according to the procedure for evaluating this established in the RD 1971/1999 and modified by the RD 1856/2009. 2) When the box is marked with a '-' sign before the data, it indicates that the number of sample observations is between 100 and 500, so the figure is subject to great variability. Source: Spanish National Statistics Institute