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. 2023 Sep 18;18(9):e0291428. doi: 10.1371/journal.pone.0291428

Table 4. The average education, experience and job training.

Cluster Group Education level (1–12) Experience (years) Job training (years)
C1: Managerial and supervisory occupations G1: Managers 6.6 4.3 0.9
G2: Supervisors 4.1 3.1 0.9
C2: Education, mental health and counselling occupations G3: Educators 9.9 3.6 1.0
G4: Counselors 7.8 2.2 0.8
C3: Science, technology and engineering occupations G5: Scientists 7.3 3.4 1.2
G6: Non-medical technicians 4.8 3.1 1.0
C4: Special and support services occupations G7: Medical technicians 4.8 1.3 0.6
G8: Physicians 8.4 2.5 1.0
G9: Safety protectors 4.2 3.0 1.4
C5: Analytical and expert services occupations G10: Analysts 5.7 2.7 0.9
G11: Clerical workers 5.8 2.0 0.6
G12: Office staff 3.7 1.7 0.6
C6: Customer and personal services occupations G13: Personal service providers 2.6 1.0 0.5
G14: Sales persons 2.7 1.3 0.6
C7: Equipment operation and services occupations G15: Equipment operators 2.6 1.9 1.2
C8: Basic services, crafts and manual occupations G16: Craftspersons 2.2 1.6 1.1
G17: Manual labors 2.1 0.8 0.5

Sources: Authors own calculations. Occupations are clustered using the Ward hierarchical method based on 72 principal components derived from 220 occupational descriptors from O*NET. For each occupation, descriptors related to education, experience, and job training are aggregated into 3 corresponding variables and then averaged across occupations in each group.