Survey on Human Resources in Science and Technology 
Personal characteristics of the doctorate-holders
Professional level of the parents of the doctorate-holders.
Units: percentage

,Father,Mother,
Total,100.00,100.00,
Military occupations,4.24,0.03,
Directors and managers,6.39,0.81,
Scientific and intellectual professionals,34.59,18.96,
Intermediate-level technicians and professionals,4.54,0.50,
Administrative support personnel,7.79,7.36,
Workers in services and salespersons in shops and markets,12.84,8.05,
Farmers and qualified livestock and fishing workers,6.66,2.45,
Skilled workers, operators and artisans of mechanical arts and other trades,13.25,2.40,
Installation and machinery operators and assemblers,3.41,0.48,
Elementary occupations,6.30,7.77,
S/he has never worked,0.00,51.19,
Notes:
Source: National Statistics Institute