Sriram Urshila, Tarasuk Valerie
Department of Nutritional Sciences, University of Toronto, Toronto, ON.
Can J Public Health. 2015 Apr 29;106(5):e322-7. doi: 10.17269/cjph.106.4893.
The socio-demographic characteristics of food-insecure households in Canada have been well characterized, but there is little understanding of what drives the prevalence rates. This study was undertaken to estimate the prevalence of household food insecurity by census metropolitan area (CMA), compare prevalence rates within CMAs and within provinces over time, and assess the effect of local area economic characteristics on changes in CMA food insecurity rates.
Data from the 2007-2012 annual components of the Canadian Community Health Survey were used to generate food insecurity rates for 33 CMAs and the corresponding nine provinces, and to compare changes in prevalence over time. Fixed-effects multiple linear regression analysis was applied to examine associations between changes in food insecurity and local area economic factors, considering peak unemployment rate, average number of Employment Insurance beneficiaries, vacancy rate, poverty rate and poverty gap.
Food insecurity rates ranged from 19.9% in Halifax to 9.0% in Quebec City in 2011-2012. Rates within and between CMAs were much more variable than provincial rates. Between 2007-2008 and 2011-2012, the prevalence increased significantly in Halifax, Montreal, Peterborough, Guelph, Calgary and Abbotsford, but decreased in Hamilton. Among the economic characteristics examined, only rising peak unemployment rates were linked to increases in food insecurity in CMAs.
Our results suggest that policy initiatives to expand employment opportunities, improve the quality and stability of employment, and increase benefits for disadvantaged workers could reduce the prevalence of food insecurity within CMAs.
加拿大粮食不安全家庭的社会人口特征已得到充分描述,但对于导致患病率的因素却了解甚少。本研究旨在按人口普查大都市区(CMA)估计家庭粮食不安全的患病率,比较不同时间内各CMA以及各省之间的患病率,并评估当地经济特征对CMA粮食不安全率变化的影响。
利用加拿大社区健康调查2007 - 2012年年度部分的数据,得出33个CMA以及相应9个省的粮食不安全率,并比较患病率随时间的变化。采用固定效应多元线性回归分析,考虑失业率峰值、就业保险受益人的平均数量、空置率、贫困率和贫困差距,来检验粮食不安全变化与当地经济因素之间的关联。
2011 - 2012年,粮食不安全率从哈利法克斯的19.9%到魁北克市的9.0%不等。CMA内部和之间的比率比省级比率的变化大得多。在2007 - 2008年至2011 - 2012年期间,哈利法克斯、蒙特利尔、彼得伯勒、圭尔夫、卡尔加里和阿伯茨福德的患病率显著上升,但汉密尔顿的患病率下降。在所研究的经济特征中,只有失业率峰值上升与CMA中粮食不安全状况的增加有关。
我们的结果表明,旨在扩大就业机会、提高就业质量和稳定性以及增加弱势工人福利的政策举措,可能会降低CMA内粮食不安全的患病率。