Prevalence of osteoporotic vertebral fracture [FRAVO]

FRAVO

   

Description

Is a cross-sectional study with a sample of more than 800 women aged over 50 who live in the city of Valencia. Information was obtained, through a questionnaire, on sociodemographic characteristics, lifestyles and risk factors for vertebral fracture, treatments, and health-related quality of life. These women underwent a densitometry and radiology test of the thoracic and lumbar spine.

Objectives

  • To estimate the prevalence of osteoporotic fractures, risk factors and treatment in women in the City of Valencia.
  • Assess the adequacy of performing complementary tests.
  • Assess the adequacy of the prescription of osteoporotic treatments.

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Prevalence of osteoporotic vertebral fracture [FRAVO] - Results

 

The population-based prevalence of osteoporotic vertebral fracture and densitometric osteoporosis in postmenopausal women over 50 in Valencia, Spain (the FRAVO Study).

  • To estimate the prevalence of vertebral fracture and densitometric osteoporosis in postmenopausal women over the age of 50 in Valencia, Spain.
     
  • Results: The average age of the women was 64 years (range 50–87 years). The prevalence for all vertebral fractures was 21.4% (95% CI: 17.7%–25.1%) and 9.7% (95% CI: 6.7%–12.7%) for moderate–severe fractures. In women over the age of 75, the respective values were 46.3% (95% CI: 34.2%–58.3%) and 23.9% (95% CI:13.6%–34.2%). Only 1.5% of the women with vertebral fractures were aware of their condition. The prevalence of osteoporosis was estimated as 27.0% (95% CI:23.1%–30.8%) for the lumbar spine, 15.1% (95% CI:11.7%–18.5%) in the femoral neck, and 31.8% (95% CI:27.8%–35.7%) at either sites.
     
  • Conclusions: The study confirms that osteoporosis (1 in 3 women over the age of 50) and vertebral fracture (1 in 5 for all fractures and 1 in 10 for moderate–severe fractures) constitute a major public health and healthcare challenge; measuring their real impact will depend in part on the criteria used to define a fracture.

Impact of osteoporosis and vertebral fractures on quality-of-life. a population-based study in Valencia, Spain (The FRAVO Study).

  • To describe the health related quality of life in a population sample of postmenopausal women over the age of 50 and resident in the city of Valencia (Spain), according to the presence/absence of osteoporosis and the severity of prevalent morphometric vertebral fractures.
     
  • Results: In the non-adjusted analysis, mild and moderate-severe vertebral fractures were associated with decreased scores in the SF-12 Physical Component Summary (PCS) but not in the Mental Component Summary (MCS), while densitometric osteoporosis with no accompanying fracture was not associated with a worse health related quality of life. In multivariate analysis worse PCS scores were associated to the age groups over 70 (-2.43 for 70-74 group and -2.97 for 75 and older), chronic conditions (-4.66, -6.79 and -11.8 according to the presence of 1, 2 or at least 3 conditions), obesity (-5.35), peripheral fracture antecedents (-3.28), hypoestrogenism antecedents (-2.61) and the presence of vertebral fracture (-2.05).
     
  • Conclusions: After adjusting for confounding factors, the physical components of health related quality of life were significantly lower in women with prevalent osteoporotic vertebral fractures than in women -osteoporotic or not- without vertebral fractures.

Vertebral fracture risk factors in postmenopausal women over 50 in Valencia, Spain. A population-based cross-sectional study.

  • This study aims to estimate the prevalence of risk factors for osteoporotic vertebral fracture and analyze the possible associations between these factors and the presence of densitometric osteoporosis and prevalent morphometric vertebral fracture.
     
  • Results: The most prevalent risk factors were densitometric osteoporosis (31.7%), history of parental hip fracture (19.4%), hypoestrogenism (19%), and body mass index (BMI) ≥ 30 kg/m2 (35.2%). After adjusting for all covariables, densitometric osteoporosis was associated with increased age [odds ratio (OR)65–69 years: 2.84, 95% confidence interval (CI): 1.75–4.61; OR70–74 years: 4.01, 95% CI: 2.47–6.52; OR75 + years: 5.96, 95% CI: 3.27–10.87] and inversely associated with high BMI (OR25.0–29.9: 0.51, 95% CI: 0.34–0.76; OR≥ 30: 0.30, 95% CI: 0.19–0.46). Morphometric vertebral fracture was associated with age (OR65–69 years: 2.04, 95% CI: 1.03–4.05; OR70–74 years: 4.05, 95% CI: 2.11–7.77; OR75 + years: 8.43, 95% CI: 3.97–17.93), poor educational level (OR: 1.70, 95% CI: 1.06–2.72) and with densitometric osteoporosis and BMI ≥ 30 kg/m2 (OR: 3.35, 95% CI: 1.85–6.07).
     
  • Conclusions: The most prevalent osteoporotic fracture risk factors were having a high BMI and the presence of densitometric osteoporosis. A higher risk of morphometric vertebral fracture in women with both low bone mineral density and high BMI was found. This association, if confirmed, has important implications for clinical practice and fracture risk tools. We also found a higher risk in women with a poor educational level. More attention should be addressed to these populations in order to control modifiable risk factors.
  • Inappropriate prescribing of antiosteoporotic medications has been observed; however, the joint study of both overuse and underuse has barely been attempted. Spain, with its high utilization rates, constitutes a good example to assess differences in over and under use according to diverse highly-influential osteoporosis guidelines (HIOG) worldwide.
     
  • In conclusion, we found that the pharmacological management of osteoporosis in women of 50 and over in this population combines an important overuse and, to a lesser extent, underuse, although the level of inappropriateness varied strikingly depending on the CPG used. It seems urgent to reduce treatment overuse without neglecting underuse, as is urgent an attempt to reach wider agreement worldwide regarding osteoporosis management, in order to facilitate appropriate treatment and development of policies to reduce effectively treatment inappropriateness.

Agreement between semi-automatic radiographic morphometry and Genant semi-quantitative method in the assessment of vertebral fractures.

  • The aim of this study was to evaluate the agreement between radiologists using the Genant semi-quantitative (SQ) method and semi-automated morphometry in the diagnosis of vertebral fractures in post-menopausal women.
     
  • Results: The radiologists' agreement was 98.4% (Kappa, 0.75; 95% CI, 0.42–0.89). Agreement between semi-automated morphometry and SQ reached 97.6% and Kappa was 0.86 (95% CI, 0.66–0.94). In the whole evaluation of the spine semi-automated morphometry overestimates, the prevalence of fractures compared with the radiologists were 15.8% of women with fractures and 7.4% of women with moderate–severe fractures by semi-automated morphometry vs. 8.4% and 3.2% by the SQ method. The negative predictive value for MorphoXpress was 99% while the positive was 40%.
     
  • Conclusions: Semi-automated morphometry shows high reliability and a substantial agreement with the SQ approach but overestimates the prevalence of fractures. Its role in routine clinical practice is limited because positive results should be reassessed by qualitative or semi-quantitative methods.

Prevalence of osteoporotic vertebral fracture [FRAVO]
   

Funding

General Directorate for Health Organization, Evaluation and Research (Project 0018/2005) and the General Directorate for Public Health of the Ministry of Health of the Autonomous Government of Valencia, and a nonconditioned research grant from Sanofi-Aventis