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Table 2 Summary of descriptive characteristics of the study cohort (n = 1201)

From: Validation of an osteoporosis self-assessment tool to identify primary osteoporosis and new osteoporotic vertebral fractures in postmenopausal Chinese women in Beijing

Characteristic Mean or value Range
Age (years, mean ± SD) 62.42 ± 9.27 45-89
Age group—n (%)   
<50 years 52 (4.33%)  
50–59 years 505 (42.05%) 50-59
60–69 years 330 (27.48%) 60-69
70–79 years 261(21.73%) 70-79
≥80 years 53 (4.41%) 80-89
Height (cm, mean ± SD) 158.64 ± 5.15 140-178
Weight (kg, mean ± SD) 60.47 ± 9.49 35-106
Body mass index (kg/m2, mean ± SD) 24.01 ± 3.50 14.34-39.41
BMD (g/cm2) (mean ± SD)   
L1–L4 0.83 ± 0.15 0.370-1.534
Femoral neck 0.67 ± 0.13 0.269-1.160
Total hip 0.77 ± 0.14 0.268-1.235
T-score (mean ± SD)   
L1–L4 T-score -1.29 ± 1.44 -5.2–5.3
Femoral neck T-score -1.34 ± 1.34 -5.5–3.6
Total hip T-score -0.83 ± 1.27 -5.5–3.4
WHO diagnostic categories—n (%)a   
Normal 303/1201 (25.23)  
Osteopenia 546/1201 (45.46)  
Osteoporosis 352/1201 (29.31)  
T-score ≤-2.5—n (%)   
L1–L4 247/1201(20.57)  
Femoral neck 216/1201 (17.99)  
Total hip 108/1201 (8.99)  
History of fragility fracture—n (%) 341/1201(28.39)  
OSTA score (mean ± SD) -0.35 ± 2.52 -10–8
  1. aLowest BMD T-score in the lumbar spine, femoral neck, or total hip was considered.