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. Author manuscript; available in PMC: 2015 Nov 18.
Published in final edited form as: Am Econ Rev. 2012 Aug;102(5):1832–1856. doi: 10.1257/aer.102.5.1832
N Mean occupation
score (1880)
Percentage with
occupation score < 12
Unmatched 21,949 14.68 35.20
Matched 3,597 14.65 36.50
  Matched (US) 2,392 14.77 35.50
  Matched (Norway) 1,205 14.39 38.40*