Comparing life expectancy and health-adjusted life expectancy by body mass index category in adult Canadians: a descriptive study

Table 3 Contribution of Mortality and HRQL components to differences in HALE at age 20 between BMI categories (given category vs. normal weight category), by sex, Canada, 2000-2005

	Females					Males
	Under-weight	Normal weight	Over-weight	Obesity class 1	Obesity class 2+	Under-weight	Normal weight	Over-weight	Obesity class 1	Obesity class 2+
HALE difference: [HALE(i) -HALE(n)]^a	-5.6*	REF	1.5*	-2.7*	-10.0*	-9.0*	REF	2.9*	0.4	-6.2*
Difference due to premature mortality	-2.8	REF	2.6	1.2	-2.2	-3.0	REF	2.9	1.3	-2.7
Difference due to loss of HRQL	-2.7	REF	-1.0	-3.8	-7.8	-5.9	REF	0.0	-1.0	-3.5

Based on decomposition technique developed by Nusselder and Looman (2004) and Arriaga et al. (1984).
HALE (i) = HALE for indicated BMI category; HALE(n) = HALE for normal BMI category (reference).
*p < 0.01 HALE difference: statistically significant difference vs. normal weight (significance tests on first line only).
^aSome discrepancies in HALE difference and component difference are due to rounding.
Sources of data: National Population Health Survey, Cycles 1–8 (1994/1995-2009), Statistics Canada; Canadian Community Health Survey, combined cycles 2000–2001, 2003, and 2005, Statistics Canada; Canadian Chronic Disease Surveillance System, 2000–2005, Public Health Agency of Canada.

ISSN: 1478-7954