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Table 1 Characteristics of the study sample

From: Calcaneal quantitative ultrasound and Phalangeal radiographic absorptiometry alone or in combination in a triage approach for assessment of osteoporosis: a study of older women with a high prevalence of falls

  Without osteoporosis (n = 159) With osteoporosis (n = 127) p value
Age, years median [IQR] (range) 78 [74–89] (65–93) 82 [76–88] (65–98) <0.0011
BMI, kg/m2 median [IQR] 27 [24–32] 25 [22–29] <0.0011
No. of medications median [IQR] 5 [3–7] 5 [3–7] 0.761
No. of diagnoses median [IQR] 3 [2–4] 3 [2–5] <0.051
Prior fracture after the age of 50% 39 54 <0.013
≥one falls within the last 12 months% 69.8 63.3 0.243
DXA T-score (n = 275)
  Lumbar spine median [IQR] -1.07 [-1.66–0.0] -2.68 [-3.16– –2.04] <0.0011
  Femoral neck median [IQR] -1.68 [-2.06– –1.0] -2.90 [-3.23– –2.51] <0.0011
  Total hip median [IQR] -1.07 [-1.60– –0.42] -2.35 [-2.9– –1.89] <0.0011
QUS calcaneal (n = 221)
  BUA dB/MHz, median [IQR] 105.6 [95.2–117.8] 86.9 [78.9–96.7] <0.0011
  SOS m/s, median [IQR] 1539.3 [1519.4–1558.3] 1508.3 [1488.1–1527.6] <0.0011
  SI T-score, median [IQR] -1.2 [-2.1– –0.3] -2.8 [-3.6– –2.0] <0.0011
RA phalangeal (n = 245)
  T-score median [IQR] -1.36 [-2.08– –0.37] -2.62 [-3.36– –1.90] <0.0011
  1. Abbreviations: IQR Inter Quartile Range, BMI Body Mass Index, DXA Dual Energy X-ray Absorptiometry, QUS Quantitative Ultrasound, RA Radiographic Absorptiometry, BUA Broadband Ultrasound Attenuation, SOS Speed of Sound, SI Stiffness Index.1Man-Whitney test, 2two sample t-test, 3chi2 test.