Association Between Sleep-Related Medication Use and Recurrent Falls Among Inpatients: A Five-Year Retrospective Observational Study at a University Hospital.
Imai N, Homma D, et al. • Medical sciences (Basel, Switzerland) • 2026
Sleep-related medication use, particularly concurrent use of multiple classes, was associated with recurrent inpatient falls, so these medications should be reviewed at hospital admission and reassessed after an index fall, with particular attention to their indications and concurrent use.
Key Findings
Results
Of 1830 inpatients with falls, 436 were recurrent fallers and 1394 were single fallers.
The study was a single-center retrospective observational study at a university hospital.
It covered 2587 inpatient fall events between January 2021 and December 2025.
Patients were classified as single fallers (one fall) or recurrent fallers (two or more falls).
Results
Benzodiazepine use at the first fall was associated with a higher risk of recurrent falls.
Model 1 (adjusted for age, sex, and activity): adjusted RR 1.56; 95% CI 1.25-1.95.
Model 2 (additionally adjusted for dementia and total medication count): RR 1.54; 95% CI 1.22-1.94.
Estimated using modified Poisson regression with a log link and robust sandwich variance.
Results
Non-benzodiazepine hypnotics (Z-drugs) were associated with recurrent falls.
Model 1: RR 1.49; 95% CI 1.13-1.95.
Model 2: RR 1.46; 95% CI 1.11-1.92.
The association persisted after adjustment for dementia and total medication count.
Results
Orexin receptor antagonist use was associated with recurrent falls.
Model 1: RR 1.39; 95% CI 1.16-1.66.
Model 2: RR 1.37; 95% CI 1.14-1.64.
The association persisted after additional adjustment.
Results
Ramelteon was not significantly associated with recurrent falls.
Adjusted RR 1.29; 95% CI 0.96-1.74.
The confidence interval includes 1.
Results
Any sleep-related medication use was associated with recurrent falls.
Adjusted RR 1.53; 95% CI 1.30-1.82.
Covariates were age, sex, activity at first fall, dementia, and total medication count.
Results
Concurrent use of two or more sleep-related medication classes was associated with the highest risk of recurrent falls.
Adjusted RR 1.83; 95% CI 1.46-2.29.
This estimate was larger than that for any single drug class or for any sleep-related medication use.
Conclusions
The authors conclude that sleep-related medications should be reviewed at admission and reassessed after an index fall.
They emphasize attention to indications and to concurrent use of multiple classes.
Medications assessed were benzodiazepines for insomnia or anxiety, Z-drugs, orexin receptor antagonists, and ramelteon, evaluated at the first fall.
What This Means
This study looked at five years of fall records at one university hospital in Japan, covering 1830 patients who fell a total of 2587 times. About one in four of these patients (436) fell more than once. The researchers compared those who fell repeatedly with those who fell only once, focusing on which sleep-related medications they were taking when they first fell.
Patients taking benzodiazepines, Z-drug sleeping pills, or orexin receptor antagonists were about 40–55% more likely to fall again, even after accounting for age, sex, what they were doing when they fell, dementia, and the total number of medications they took. Ramelteon did not show a clear link. Taking any sleep-related medication was linked to roughly 50% higher risk, and taking two or more classes together was linked to about 83% higher risk.
This research suggests that sleep medications, especially several used together, may be worth reviewing when patients are admitted and again after a fall. Because this was a retrospective, single-hospital study, it shows association rather than proof that the drugs cause repeat falls, and sicker patients may be more likely to receive these medications.
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Imai N, Homma D, Shobugawa Y, Sato K, Horigome Y, Kawashima H. (2026). Association Between Sleep-Related Medication Use and Recurrent Falls Among Inpatients: A Five-Year Retrospective Observational Study at a University Hospital.. Medical sciences (Basel, Switzerland). https://doi.org/10.3390/medsci14060693