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Influenza immunization, by age group and sex, household population aged 12 and over, Canada, 2005


                               Total Less than one year ago 1 or more years ago Never Not stated
   number % number % number % number %
Total, 12 years and over 27,131,964 8,881,433 32.7 4,899,090 18.1 12,530,471 46.2 820,970 3.0
Males 13,371,912 3,990,948 29.8 2,677,990 20.0 6,229,157 46.6 473,817 3.5
Females 13,760,052 4,890,485 35.5 2,221,101 16.1 6,301,314 45.8 347,153 2.5
12 to 19 years 3,353,635 723,952 21.6 795,506 23.7 1,620,421 48.3 213,757 6.4
Males 1,716,269 389,346 22.7 442,276 25.8 763,538 44.5 121,108 7.1
Females 1,637,366 334,605 20.4 353,229 21.6 856,883 52.3 92,648 5.7
12 to 14 years 1,235,765 284,074 23.0 226,912 18.4 629,978 51.0 94,801 7.7
Males 648,825 156,076 24.1 124,056 19.1 317,139 48.9 51,553 7.9
Females 586,940 127,998 21.8 102,856 17.5 312,839 53.3 43,248 7.4
15 to 19 years 2,117,870 439,878 20.8 568,594 26.8 990,443 46.8 118,956 5.6
Males 1,067,444 233,270 21.9 318,220 29.8 446,399 41.8 69,555 6.5
Females 1,050,426 206,608 19.7 250,373 23.8 544,044 51.8 49,401 4.7
20 to 34 years 6,422,774 1,181,315 18.4 1,598,143 24.9 3,489,757 54.3 153,560 2.4
Males 3,211,070 475,642 14.8 931,309 29.0 1,707,547 53.2 96,573 3.0
Females 3,211,704 705,673 22.0 666,834 20.8 1,782,210 55.5 56,987 1.8
20 to 24 years 2,239,344 360,892 16.1 689,930 30.8 1,111,730 49.6 76,792 3.4
Males 1,167,581 151,368 13.0 430,367 36.9 534,710 45.8 51,136 4.4
Females 1,071,763 209,524 19.5 259,563 24.2 577,020 53.8 25,656 E 2.4 E
25 to 34 years 4,183,431 820,423 19.6 908,212 21.7 2,378,027 56.8 76,768 1.8
Males 2,043,490 324,275 15.9 500,941 24.5 1,172,837 57.4 45,437 2.2
Females 2,139,941 496,149 23.2 407,271 19.0 1,205,190 56.3 31,331 1.5
35 to 44 years 5,087,627 1,267,193 24.9 908,159 17.9 2,841,386 55.8 70,889 1.4
Males 2,573,924 560,881 21.8 499,592 19.4 1,474,593 57.3 38,858 1.5
Females 2,513,703 706,312 28.1 408,567 16.3 1,366,794 54.4 32,031 1.3
45 to 64 years 8,339,620 3,097,840 37.1 1,259,957 15.1 3,844,718 46.1 137,106 1.6
Males 4,122,741 1,428,545 34.7 660,321 16.0 1,954,230 47.4 79,645 1.9
Females 4,216,879 1,669,294 39.6 599,636 14.2 1,890,488 44.8 57,461 1.4
45 to 54 years 4,784,779 1,514,287 31.6 770,451 16.1 2,431,475 50.8 68,566 1.4
Males 2,343,864 682,527 29.1 409,245 17.5 1,211,298 51.7 40,794 1.7
Females 2,440,914 831,760 34.1 361,206 14.8 1,220,178 50.0 27,771 E 1.1 E
55 to 64 years 3,554,841 1,583,553 44.5 489,506 13.8 1,413,243 39.8 68,540 1.9
Males 1,778,877 746,018 41.9 251,076 14.1 742,933 41.8 38,851 2.2
Females 1,775,964 837,535 47.2 238,430 13.4 670,310 37.7 29,690 E 1.7 E
65 years and over 3,928,308 2,611,134 66.5 337,326 8.6 734,189 18.7 245,659 6.3
Males 1,747,908 1,136,534 65.0 144,491 8.3 329,249 18.8 137,634 7.9
Females 2,180,401 1,474,600 67.6 192,835 8.8 404,940 18.6 108,025 5.0
65 to 74 years 2,244,943 1,433,940 63.9 215,396 9.6 509,258 22.7 86,349 3.8
Males 1,068,532 665,525 62.3 101,311 9.5 251,356 23.5 50,340 4.7
Females 1,176,411 768,416 65.3 114,085 9.7 257,902 21.9 36,009 3.1
75 years and over 1,683,365 1,177,194 69.9 121,931 7.2 224,931 13.4 159,310 9.5
Males 679,376 471,009 69.3 43,180 6.4 77,893 11.5 87,294 12.8
Females 1,003,989 706,185 70.3 78,750 7.8 147,038 14.6 72,016 7.2

1. Population aged 12 and over who reported when they had their last influenza immunization (flu shot).
2. When comparing estimates, it is important to use confidence intervals to determine if differences between values are statistically significant. Confidence intervals describe sampling variability and give an indication of the precision of a given estimate.
3. Bootstrapping techniques were used to produce the coefficient of variation (CV) and 95% confidence intervals (CIs).
4. Data with a coefficient of variation (CV) from 16.6% to 33.3% are identified as follows: (E) use with caution.
5. Data with a coefficient of variation (CV) greater than 33.3% were suppressed due to extreme sampling variability and are identified as follows: (F) too unreliable to be published.
Source: Statistics Canada, Canadian Community Health Survey (CCHS 3.1), 2005 (CANSIM table 105-0445).