. Author manuscript; available in PMC: 2009 Sep 11.

Published in final edited form as: Dement Geriatr Cogn Disord. 2009 Jul 11;27(6):557–563. doi: 10.1159/000228257

Table 3.

Association of MMSE score with rate of falls in univariate and stepwise multivariate regression models.

	Univariate Model^* N=172				Multivariate (Stepwise) Model^*^† N=171^‡

	Rate Ratio	95% CI		P-Value	Rate Ratio	95% CI		P-Value
MMSE Score Average linear effect (22–30)^§	1.25	1.09	1.45	0.0026	1.20	1.03	1.40	0.0209

Negative binomial (overdispersed Poisson) generalized additive regression model with a log link function.

^†

For multivariate model, variables resulting in the largest change in the average linear effect (average change in falls rate for a 1-point drop in MMSE score in the range 22–30) were added to the model until the addition of any of the remaining variables did not result in a ≥10% change in the average linear effect. Resulting model adjusted for Barthel score, assistive device use, current exercise and arthritis.

^‡

Data on arthritis was not available for one subject.

^§

Average rate ratio (RR) for a 1-point difference in MMSE scores in the range 22–30. (MMSE of 22 was the last score with more than 1 observation).