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Table 1 Sample size and response rate by the Canadian Community Health Survey cycle

From: Stable prevalence of chronic back disorders across gender, age, residence, and physical activity in Canadian adults from 2007 to 2014

Year Response Ratea Unweighted sample sizeb
Household-level response Person-level response Combined response rate Total Chronic Back Disorders Analyzed
Yes No Missing
2007 84.6 91.7 77.6 46,634 9724 36,845 65 46,569
2008 84.6 91.7 77.6 45,793 11,515 34,218 60 45,733
2009 81.3 90.0 73.2 42,483 8896 33,547 40 42,443
2010 80.7 88.6 71.5 42,928 8784 34,102 42 42,886
2011 79.5 87.8 69.8 43,156 8735 34,358 63 43,093
2012 77.3 86.7 67.0 41,415 8327 33,026 62 41,353
2013 76.6 87.2 66.8 42,052 8518 33,472 62 41,990
2014 75.1 87.4 65.6 40,663 8352 32,247 64 40,599
  1. aCalculated for the complete surveys including people 12 years or older. bPeople aged 18–65 years