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Table 2 Vertebral Fracture Results for BCS and PK-VF Study Cohorts

From: Vertebral fractures among breast cancer survivors in China: a cross-sectional study of prevalence and health services gaps

Variable BCS Cohort PK-VF Cohort
Individuals with VF n/N(%) 22/200 (11%)§ 7/200 (3.5%)
 Grade 1a, b 13 5
 Grade 2 12§ 2
 Grade 3 2 0
VFs per Individual median(range) 1(1–10) 1(1–2)
Total Number of VF N 47¥ 9
 Grade 1 19* 7
 Grade 2 25¥ 2
 Grade 3 3 0
  1. VF vertebral fracture, PK-VF Peking Vertebral Fracture Study, BCS breast cancer survivors
  2. * < .05
  3. § < .01
  4. ¥ < .001
  5. a Please note that because some individuals have multiple fractures of different grades, the number of individuals with grade 1, grade 2 and grade 3 fractures add up to more than 22
  6. b Vertebral Fractures were classified using the Genant Semi-Quantitative technique. In this method, vertebrae T4-L4 are graded as normal (Grade 0), mildly deformed (Grade 1, approximately 20–25% reduction in anterior, middle, and/or posterior height and a reduction in area of 10–20%), moderately deformed (Grade 2, approximately 25–40 reduction in any height and a reduction in area 20–40%), and severely deformed (Grade 3, approximately 40% reduction in any height and area)13