Survey on Human Resources in Science and Technology Personal characteristics of the doctorate-holders Type of centre in which the doctorate-holder undertook her/his studies prior to the university studies, according to socio-economic origin. Units: percentage Primary Education Secondary Education/ VT II Post-Secondary Education Public Semi-private Private Public Semi-private Private Public Semi-private Private Total 43.01 27.27 29.72 49.90 21.94 28.15 55.95 16.60 27.45 Military occupations 1.97 0.96 1.31 2.37 0.71 1.15 2.47 0.62 1.15 Directors and managers 1.46 2.05 3.15 2.11 1.78 2.78 2.59 1.38 2.69 Scientific and intellectual professionals 13.16 10.81 13.72 15.68 8.88 13.12 17.52 7.10 13.06 Intermediate-level technicians and professionals 1.15 1.14 1.76 1.55 0.95 1.54 1.90 0.64 1.51 Administrative support personnel 3.56 2.46 2.47 4.32 2.05 2.12 5.03 1.48 1.98 Workers in services and salespersons in shops and markets 5.97 4.09 3.14 6.97 3.08 3.15 7.93 2.18 3.09 Farmers and qualified livestock and fishing workers 4.58 0.86 0.84 4.42 0.95 0.92 4.59 0.77 0.93 Skilled workers, operators and artisans of mechanical arts and other trades 5.90 2.93 2.07 6.56 2.24 2.10 7.61 1.38 1.92 Installation and machinery operators and assemblers 1.79 0.66 0.36 1.98 0.47 0.37 2.13 0.37 0.31 Elementary occupations 3.48 1.29 0.89 3.94 0.83 0.89 4.17 0.69 0.80 Notes: Source: National Statistics Institute