Abstract
Although a clear risk of mortality is associated with obesity, the risk of mortality associated with overweight is equivocal. The objective of this study is to estimate the relationship between BMI and all-cause mortality in a nationally representative sample of Canadian adults. A sample of 11,326 respondents aged 25 in the 1994/1995 National Population Health Survey (Canada) was studied using Cox proportional hazards models. A significant increased risk of mortality over the 12 years of follow-up was observed for underweight (BMI 18.5; relative risk (RR) = 1.73, P 0.001) and obesity class II (BMI 35; RR = 1.36, P 0.05). Overweight (BMI 25 to 30) was associated with a significantly decreased risk of death (RR = 0.83, P 0.05). The RR was close to one for obesity class I (BMI 30-35; RR = 0.95, P 0.05). Our results are similar to those from other recent studies, confirming that underweight and obesity class II are clear risk factors for mortality, and showing that when compared to the acceptable BMI category, overweight appears to be protective against mortality. Obesity class I was not associated with an increased risk of mortality.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 214-218 |
| Number of pages | 5 |
| Journal | Obesity |
| Volume | 18 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 2010 |
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ASJC Scopus subject areas
- Endocrinology
- Medicine (miscellaneous)
- Endocrinology, Diabetes and Metabolism
- Nutrition and Dietetics
Cite this
BMI and mortality : Results from a national longitudinal study of canadian adults. / Orpana, Heather M.; Berthelot, Jean Marie; Kaplan, Mark S.; Feeny, David H.; McFarland, Bentson; Ross, Nancy A.
In: Obesity, Vol. 18, No. 1, 01.2010, p. 214-218.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - BMI and mortality
T2 - Results from a national longitudinal study of canadian adults
AU - Orpana, Heather M.
AU - Berthelot, Jean Marie
AU - Kaplan, Mark S.
AU - Feeny, David H.
AU - McFarland, Bentson
AU - Ross, Nancy A.
PY - 2010/1
Y1 - 2010/1
N2 - Although a clear risk of mortality is associated with obesity, the risk of mortality associated with overweight is equivocal. The objective of this study is to estimate the relationship between BMI and all-cause mortality in a nationally representative sample of Canadian adults. A sample of 11,326 respondents aged 25 in the 1994/1995 National Population Health Survey (Canada) was studied using Cox proportional hazards models. A significant increased risk of mortality over the 12 years of follow-up was observed for underweight (BMI 18.5; relative risk (RR) = 1.73, P 0.001) and obesity class II (BMI 35; RR = 1.36, P 0.05). Overweight (BMI 25 to 30) was associated with a significantly decreased risk of death (RR = 0.83, P 0.05). The RR was close to one for obesity class I (BMI 30-35; RR = 0.95, P 0.05). Our results are similar to those from other recent studies, confirming that underweight and obesity class II are clear risk factors for mortality, and showing that when compared to the acceptable BMI category, overweight appears to be protective against mortality. Obesity class I was not associated with an increased risk of mortality.
AB - Although a clear risk of mortality is associated with obesity, the risk of mortality associated with overweight is equivocal. The objective of this study is to estimate the relationship between BMI and all-cause mortality in a nationally representative sample of Canadian adults. A sample of 11,326 respondents aged 25 in the 1994/1995 National Population Health Survey (Canada) was studied using Cox proportional hazards models. A significant increased risk of mortality over the 12 years of follow-up was observed for underweight (BMI 18.5; relative risk (RR) = 1.73, P 0.001) and obesity class II (BMI 35; RR = 1.36, P 0.05). Overweight (BMI 25 to 30) was associated with a significantly decreased risk of death (RR = 0.83, P 0.05). The RR was close to one for obesity class I (BMI 30-35; RR = 0.95, P 0.05). Our results are similar to those from other recent studies, confirming that underweight and obesity class II are clear risk factors for mortality, and showing that when compared to the acceptable BMI category, overweight appears to be protective against mortality. Obesity class I was not associated with an increased risk of mortality.
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U2 - 10.1038/oby.2009.191
DO - 10.1038/oby.2009.191
M3 - Article
C2 - 19543208
AN - SCOPUS:73949159543
VL - 18
SP - 214
EP - 218
JO - Obesity
JF - Obesity
SN - 1930-7381
IS - 1
ER -