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Table 1 Sociodemographic, Reproductive, and Fracture-Associated Characteristics of 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
Age years 57.5 ± 4.9 57.5 ± 4.9
BMI kg/m2 24.8 ± 3.7 24.7 ± 3.2
Education ≥ High School 156/200 (78)c 91/197 (46.1)
Smoking, Ever 6/200 (3) 5/200 (2.5)
Current Alcohol Use 11/200 (5.5) 8/200 (4.0)
Menarche years 14.4 ± 2.0b 15.1 ± 2.4
Menopause years 49.4 ± 4.0 49.6 ± 3.5
Parity
 0 2/200 (1%) 2/190 (1.6)
 1 137/200 (68.5)b 102/190 (53.7)
  ≥ 2 61/200 (30.5)a 85/190 (44.7)
Fall in Past Year 31/198 (15.7)
Parental Fracture History 20/188 (10.6) 31/200 (15.5)
Personal Fracture History 21/200 (10.5)b 42/200 (21)
Calcium Supplement Use 96/196 (49.0)a 73/198 (36.9)
Vitamin D Supplement Use 12/200 (6.0%)
CTx ng/mL 0.458 ± 0.211 0.441 ± 0.199
P1NP ng/mL 61.1 ± 30.4 56.3 ± 24.6
25OHD ng/mL 20.3 ± 7.8c 13.3 ± 5.7
  1. Values for continuous variables are reported as mean ± SD and for categorical values as n/N(%)
  2. PK-VF Peking Vertebral Fracture study, BCS breast cancer survivors, CTx serum β-c-terminal telopeptide of type 1 collagen, P1NP pro-collagen type 1 N propeptide, 25OHD 25-hydroxy vitamin D, kg kilograms, m meters, ng nanograms, mL milliliters
  3. a < .05
  4. b < .01
  5. c < .001