TABLE 3.

Inflection point analysis of hospitalization time on fall incidence in the FMUH study, August 2008–September 2009

Outcome:	OR (95% CI)	p Value
Two‐piecewise linear regression model
Hospitalization time <8 days	0.72 (0.62 ~ 0.83)	<.001
Hospitalization time ≥8 days	1.06 (1.04 ~ 1.09)	<.001
Likelihood ratio test	—	<.001

Note: Adjusted for age, sex, history of falls, MMT (left foot), MMT (right foot), cognitive dysfunction, eyesight, ADL, planned surgery, wheelchair use, assistance with movement, laxative medication use, use of a remote care system, and sedative, hypnotic, and psychotropic medications use.

Abbreviations: ADL, activities of daily living; CI, confidence interval; FMUH, Fukushima Medical University Hospital, Fukushima, Japan; MMT, manual muscle test; OR, odds ratio.