Relationship between bone quantitative ultrasound and mortality: a prospective study.

Area of Science:

• Gerontology
• Osteoporosis Research
• Cardiovascular Epidemiology

Background:

• Previous studies suggest an inverse relationship between mortality and bone density metrics.
• Quantitative bone ultrasound (QUS) is a non-invasive method to assess bone health.
• The ECOSAP cohort study aimed to evaluate QUS and clinical factors for predicting non-vertebral fracture risk.

Purpose of the Study:

• To investigate the association between heel QUS parameters and mortality in elderly women.
• To determine if QUS can predict overall and vascular mortality.
• To analyze the predictive value of speed of sound (SOS) in a prospective cohort.

Main Methods:

• A prospective cohort of 5,201 women aged 64+ was followed for 3 years.
• Heel QUS was measured using the Sahara bone sonometer.
• Mortality data, including cause of death, were collected, and hazard rates were calculated.

Main Results:

• No significant association was found between QUS parameters and overall mortality.
• A statistically significant relationship was observed between low speed of sound (SOS) and vascular mortality.
• Each 1 SD reduction in SOS was linked to a 39% increase in vascular mortality risk.

Conclusions:

• Heel QUS speed of sound (SOS) is a predictor of vascular mortality in elderly women.
• QUS parameters, specifically SOS, may offer insights into cardiovascular risk beyond bone health.
• The study highlights the potential of QUS in assessing mortality risk in older female populations.