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Injurious falls are associated with lower household but higher recreational physical activities in community-dwelling older male veterans.

https://arctichealth.org/en/permalink/ahliterature158918
Source
Gerontology. 2008;54(2):106-15
Publication Type
Article
Date
2008
Author
Dawn P Gill
G Y Zou
Gareth R Jones
Mark Speechley
Author Affiliation
Graduate Program in Epidemiology and Biostatistics, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario, Canada. Dawn.Gill@schulich.uwo.ca
Source
Gerontology. 2008;54(2):106-15
Date
2008
Language
English
Publication Type
Article
Keywords
Accidental Falls
Aged, 80 and over
Canada
Exercise
Humans
Male
Motor Activity - physiology
Prospective Studies
Recreation
Veterans
Wounds and Injuries - etiology
Abstract
Physical activity (PA) and exercise have numerous beneficial effects in older adults. The effect of sustaining an injury from a fall on subsequent PA levels has received little research attention, even though about a quarter of older adults who fall sustain a serious injury. Even less is known about the effect of injurious falls on different PA categorizations.
To examine the role of injurious falls on subsequent household and recreational PA levels in older community-dwelling males who were all Canadian veterans of World War II and the Korean War.
Data from a fall risk-factor modification trial were used for the present study. Falls and related injuries were ascertained prospectively using fall calendars. A brief, valid and reliable PA interview for older adults (Phone-FITT) measured household and recreational PA approximately 1 year later. Covariates were measured as part of the screening questionnaire administered at the start of the study. Multiple linear regression models were computed using household and recreational PA as dependent variables.
The present study included 200 males with a mean age 81 years (SD = 3.8). Half of the participants fell at least once and about one third reported at least one injury resulting from a fall. Multivariable analyses indicated that household PA scores were 3.1 points lower (95% CI = -5.8 to -0.3, p = 0.03) and recreational PA scores were 3.4 points higher (95% CI = 0.1 to 6.7, p = 0.04) among persons who had one or more falls leading to injury compared to those who did not fall or had one or more falls without injury. Analyses were adjusted for age, baseline PA, self-rated health, foot problems, balance problems, inability to stand without using armrests, vision and memory.
Categorization of PA type (household vs. recreational) suggests distinct differences in PA response following an injurious fall. Use of an overall PA measure would obscure this finding. Following further research, the results from this study may help in the design of preventive strategies to maximize physical activity in those who have sustained an injurious fall.
PubMed ID
18259094 View in PubMed
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Methods for the statistical analysis of binary data in split-mouth designs with baseline measurements.

https://arctichealth.org/en/permalink/ahliterature166211
Source
Stat Med. 2007 Aug 15;26(18):3476-86
Publication Type
Article
Date
Aug-15-2007
Author
A. Donner
G Y Zou
Author Affiliation
Department of Epidemiology and Biostatistics, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ont., Canada. Allan.Donner@schulich.uwo.ca
Source
Stat Med. 2007 Aug 15;26(18):3476-86
Date
Aug-15-2007
Language
English
Publication Type
Article
Keywords
Clinical Trials as Topic - methods - statistics & numerical data
Data Interpretation, Statistical
Humans
Ontario
Abstract
Many split-mouth trials are characterized by the pairing of site-specific outcome and baseline data within each segment of a subject's mouth. However when the response variable of interest is binary, methods of statistical analysis for this design are not well developed. In this paper we present several analytic approaches that may be taken to the resulting data, showing how the efficiency of statistical inferences can be improved by appropriately incorporating the baseline information. The advantages and disadvantages of the different approaches are discussed in the context of an example from the published literature. The results from a limited simulation study are also presented.
PubMed ID
17149800 View in PubMed
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