Likelihood of Sustaining an Injury in the Setting of Multiple Falls.

OBJECTIVES

To evaluate the relationship between number of falls and risk of injury after a specific fall.

DESIGN

Prospective cohort study.

SETTING

Greater New Haven, Connecticut.

PARTICIPANTS

Probability sample of 1,103 community-living persons aged 72 and older.

MEASUREMENTS

Falls and fall-related injuries were ascertained monthly for 3 years using a fall calendar and follow-up telephone interviews.

RESULTS

Of 606 participants with a fall, 164 (27.0%) had at least 1 fall with a serious injury, and 455 (75.1%) had at least 1 fall with any injury; mean number of falls was 2.6±2.3 (range 1-18), of falls with serious injury was 0.3±0.6 (range 0-4), and of falls with any injury was 1.4±1.4 (range 0-9). On a per-participant basis, risk of serious injury and any injury increased progressively as the number of falls increased (P < .001). On a per-fall basis, risk of serious injury and any injury increased from 1 to 2 falls but then decreased from 2 to 3 or 4 falls and from 3 or 4 to 5 or more falls, although these differences were not statistically significant. The results were consistent for women and men and for analyses that evaluated the proportion of falls with injuries.

CONCLUSION

In community-living older persons, risk of injury from a specific fall did not differ as the number of falls increased. Falls appear to operate independently in terms of conferring risk of injury in the setting of multiple falls. J Am Geriatr Soc 67:119-123, 2019.