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. Author manuscript; available in PMC: 2015 Apr 1.
Published in final edited form as: Eur Radiol. 2014 Jan 31;24(4):940–946. doi: 10.1007/s00330-014-3095-z
Variable Flat cohort Positive
cohort
Entire
population
(n) 123 1,061 7,426
Mean Age-yr 59.5 ± 8.2 58.5 ± 8.8 56.8 ± 7.3
Male (%) 63 (51.2%) 584 (55.0%) 3,420 (46.1%)
Female (%) 60 (48.8%) 477 (45.0%) 4,006 (53.9%)