Survey on Human Resources in Science and Technology 
National results
Percentage of practising doctors who carried out research  activities at 31/12/2006, by doctoral area and employment sector.
Units: percentage

,Total,Companies,Public Administrations,Higher education,PNPI,
Total,100.00,8.16,29.31,58.34,4.19,
Natural sciences,31.30,2.72,8.49,18.48,1.61,
Engineering and technology,10.34,0.82,1.49,7.55,0.48,
Medical sciences,16.67,2.46,9.95,3.20,1.06,
Agricultural sciences,3.66,0.27,1.30,1.95,0.14,
Social sciences,23.68,1.10,4.14,17.89,0.55,
Humanities,14.35,0.79,3.94,9.27,0.35,
Notes:
Source: National Statistics Institute