Statistics on the Wage of Persons with Disabilities  
SAMPLING ERRORS: COEFFICIENT OF VARIATION FOR THE VARIABLE 'GROSS EARNING PER WORKER'
Type of contract
Units: coefficient of variation

	Total	Persons without disabilities	Persons with disabilities	
Total	0.42	0.43	2.43	
Permanent contract	0.54	0.56	2.72	
Temporary contract	1.00	1.02	4.84	
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