Table 5.

Distribution of scientists by professional rank and age within each area

	Tenured scientist	Scientific researcher	Research professor	Total
Biology and biomedicine
≤44 years	88 (78.57%)	21 (18.75%)	3 (2.68%)	112 (100%)
45–54 years	79 (45.66%)	51 (29.48%)	43 (24.86%)	173 (100%)
≥55 years	21 (20.39%)	33 (32.04%)	49 (47.57%)	103 (100%)
Total	188 (48.45%)	105 (27.06%)	95 (24.48%)	388(100%)
Materials science
≤44 years	89 (84.76%)	13 (12.38%)	3 (2.86%)	105 (100)
45–54 years	42 (37.17%)	3 (34.51%)	32 (28.32%)	113 (100)
≥55 years	33 (30.28%)	28 (25.69%)	48 (44.04%)	109 (100)
Total	164 (50.15%)	80 (24.46%)	83 (25.38%)	327 (100)
Natural resources
≤44 years	96 (83.48%)	15 (13.04%)	4 (3.48%)	115 (100)
45–54 years	73 (55.30%)	36 (27.27%)	23 (17.42%)	132 (100)
≥55 years	37 (36.27%)	33 (32.35%)	32 (31.37%)	102 (100)
Total	206 (59.03%)	84 (24.07%)	59 (16.91%)	349 (100)