Statistics on the Wage of Persons with Disabilities Sampling errors: variation coefficients for the annual earnings per worker variable Type of Working Day Unidades: coefficient of variation Total Persons without disabilities Persons with disabilities Total 0,42 0,43 2,43 Full-time 0,49 0,5 2,63 Part-time 1,24 1,27 4,94 Notas: 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. Fuente: Spanish National Statistics Institute