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Table 2 Univariate comparisons of diabetes risk factors and screening, diabetes incidence, and yield of screening

From: The effectiveness and efficiency of diabetes screening in Ontario, Canada: a population-based cohort study

  Males      Females     
  Overall N SBG Screening Rates N (%) Diabetes Incidence Rate N (%) NNS Undiagnosed N (%) Overall N SBG Screening Rates N (%) Diabetes Incidence Rate N (%) NNS Undiagnosed N (%)
Age           
< 30 770,046 338,031 (43.9) 3,775 (0.5) 90 4,813 (0.64) 724,622 530,460 (73.2) 9,258 (1.3) 57 3,389 (0.47)
30-40 932,346 549,356 (58.9) 17,516 (1.9) 31 12,211 (1.31) 878,512 678,356 (77.2) 23,993 (2.7) 28 7,079 (0.81)
40-50 895,685 622,058 (69.5) 37,893 (4.2) 16 16,668 (1.86) 915,611 738,888 (80.7) 26,571 (2.9) 28 6,355 (0.69)
50-60 592,437 488,119 (82.4) 54,358 (9.2) 9 11,617 (1.96) 605,545 527,646 (87.1) 33,802 (5.6) 16 4,990 (0.82)
60-70 352,317 301,598 (85.6) 34,063 (9.7) 9 5,728 (1.63) 425,580 367,952 (86.5) 24,965 (5.9) 15 3,910 (0.92)
70-80 237,503 200,328 (84.4) 27,067 (11.4) 7 5,023 (2.11) 326,074 284,792 (87.3) 24,579 (7.5) 12 3,563 (1.09)
> = 80 80,671 69,634 (86.3) 6,076 (7.5) 11 963 (1.19) 140,307 122,712 (87.5) 6,682 (4.8) 18 958 (0.68)
BMI           
< 23 858,877 543,837 (63.3) 17,909 (2.1) 30 10,375 (1.21) 1,585,528 1,224,805 (77.3) 22,181 (1.4) 55 6,533 (0.41)
23-25 830,834 537,390 (64.7) 25,365 (3.1) 21 13,851 (1.67) 715,910 589,129 (82.3) 10,862 (1.5) 54 2,338 (0.33)
25-30 1,545,276 1,051,697 (68.1) 63,206 (4.1) 17 29,664 (1.92) 1,093,914 910,076 (83.2) 56,542 (5.2) 16 11,422 (1.04)
30-35 492,792 335,215 (68.0) 51,068 (10.4) 7 24,006 (4.87) 375,544 318,462 (84.8) 31,460 (8.4) 10 5,639 (1.50)
≥35 117,323 90,112 (76.8) 21,361 (18.2) 4 6,450 (5.50) 159,092 136, 950 (86.1) 18,327 (11.5) 7 2,963 (1.86)
Urban           
Yes 595,749 2,199,153 (62.1) 156,774 (4.8) 14 15,103 (0.63) 3,449,416 2,803,812 (81.3) 130,476 (3.4) 21 30,043 (0.87)
No 3,265,256 369,972 (67.4) 23,973 (4.0) 15 23,973 (3.24) 566,835 447,001 (78.9) 19,374 (3.8) 23 5,194 (0.92)
Income           
Medium - High Income 3,307,677 2,212,001 (66.9) 151,223 (4.6) 15 74,906 (2.26) 3,274,131 2,660,077 (81.2) 114,373 (3.5) 23 26,411 (0.81)
Low Income 226,796 150,533 (66.4) 14,931 (6.6) 10 7,564 (3.34) 362,139 292,618 (80.8) 17,314 (4.8) 17 4,113 (1.14)
Missing income 326,533 206,591 (63.3) 14,592 (4.5) 14 8,472 (2.59) 379,781 298,118 (78.5) 18,164 (4.8) 16 4,976 (1.31)
Education (%)           
< Than Post-Secondary 1,463,580 953,241 (65.1) 85,215 (5.8) 11 46,108 (3.14) 2,345,860 1367352 (82.9) 81,053 (4.9) 17 16,733 (1.01)
Post-Secondary Graduation 2,370,510 1,596,255 (67.3) 94,249 (4.0) 17 46,330 (1.95) 1,649,628 1867019 (79.6) 68, 453 (2.9) 27 17,556 (0.75)
Ethnicity           
White 3,221,837 2.089,112 (64.8) 138,556 (4.3) 15 75,126 (2.33) 3,364,092 2,697,355 (80.2) 125,615 (3.7) 21 31,050 (0.92)
Non-white 634,399 471,945 (75.2) 40,345 (6.4) 12 13,460 (2.14) 649,657 552,197 (85.0) 24,134 (3.7) 23 4,255 (0.66)
Immigrant           
Yes 1,158,710 895,326 (77.3) 76,424 (6.6) 12 22,482 (1.94) 1,188,590 1,027,063 (86.4) 52,249 (4.4) 20 8,217 (0.69)
No 2,300,910 1,672,413 (61.9) 103,751 (3.8) 16 63,805 (2.36) 2,825,492 2221610 (78.6) 97,421 (3.5) 23 26,481 (0.94)
CDA recommended testing           
Yes 2,776,919 2,066,820 (74.4) 174,532 (6.3) 12 59,964 (2.16) 2,943,259 2,471,320 (84.0) 137,070 (4.7) 18 26,176 (0.89)
No 1,084,087 502,305 (46.3) 6,216 (0.6) 81 7,200 (0.66) 1,072,992 779,493 (72.7) 12,380 (1.2) 63 4,661 (0.43)
Hypertension           
Yes 464,040 398,018 (85.8) 52,367 (11.3) 8 8,686 (1.87) 578,863 517,314 (89.4) 51,606 (8.9) 10 6,140 (1.06)
No 3,398,054 2,168,513 (64.0) 128,373 (3.8) 17 72,361 (2.13) 3,433,812 2,729,924 (79.5) 98,245 (2.9) 28 25,332 (0.74)
Has Heart Disease           
Yes 190,236 158,9 67 (83.6) 23,433 (12.3) 7 4,609 (2.42) 198,884 176,103 (88.6) 10,431 (5.2) 17 1,349 (0.68)
No 3,670,118 2,409,746 (65.7) 157,314 (4.3) 15 8,228 (0.32) 3,816,102 3,073,446 (80.5) 139,305 (3.7) 22 33,661 (0.88)
GP visits year prior           
0 1,106,642 563,932 (51.0) 38,156 (3.5) 15 36,720 (3.32) 595,001 398,240 (66.9) 14,285 (2.4) 28 7,058 (1.19)
1 to 3 880,234 601,531 (68.3) 36,891 (4.2) 16 17,092 (1.94) 881,194 707,051 (80.2) 22,589 (2.6) 31 5,564 (0.63)
3 to 6 643,173 507,004 (78.8) 36,911 (5.7) 14 9,913 (1.54) 922,366 772,054 (83.7) 42,438 (4.6) 18 8,262 (0.90)
more than 6 610,842 517,983 (84.8) 54,679 (9.0) 9 9,802 (1.60) 1,144,539 1,012,660 (88.5) 59,031 (5.2) 17 7,688 (0.67)
Any specialist visits year prior           
Yes 1,291,364 1,012,569 (78.4) 82,866 (6.4) 12 22,816 (1.77) 1,935,924 1,656,767 (85.6) 85,879 (4.4) 19 14,470 (0.75)
No 2,569,642 1,556,555 (60.6) 97,882 (3.8) 16 63,707 (2.48) 2,080,327 1,594,047 (76.6) 63,971 (3.1) 25 19,515 (0.94)
Current Smoker           
Yes 960,272 562,180 (58.5) 30,296 (3.2) 19 21,453 (2.23) 765,308 573,968 (75.0) 27,488 (3.6) 21 9,163 (1.20)
No 2,899,597 2,006,504 (69.2) 150,452 (5.2) 13 66,966 (2.31) 3,248,525 2,675,254 (82.4) 122,362 (3.8) 22 26,220 (0.81)
Deciles of 5-year Diabetes Risk           
1 550,105 169,194 (55.4) 4,887 (0.89) 62 6,144 (1.12) 464,029 340,733 (73.4) 1,424 (0.31) 239 516 (0.11)
2 329,707 242,041 (51.3) 2,134 (0.65) 79 1,110 (0.34) 391,905 284,318 (72.5) 2,587 (0.66) 110 978 (0.25)
3 477,327 256,151 (50.7) 2,680 (0.56) 90 2,458 (0.51) 433,997 337,126 (77.7) 4,609 (1.1) 73 1,327 (0.31)
4 430,093 263,288 (59.6) 5,483 (1.3) 47 3,549 (0.83) 568,618 440,384 (77.4) 10,316 (1.8) 43 2,982 (0.52)
5 348,449 254,219 (75.6) 13,566 (3.9) 19 4,959 (1.42) 375,633 297,289 (79.1) 12,192 (3.3) 24 3,264 (0.87)
6 383,153 292,415 (66.3) 17,797 (4.6) 14 6,481 (1.69) 414,068 352,650 (85.2) 12,568 (3.0) 28 2,194 (0.53)
7 379,107 254,447 (77.1) 18,386 (4.9) 16 7,791 (2.06) 306,102 252,960 (82.6) 17,859 (5.8) 14 3,796 (1.24)
8 317,279 247,118 (80.2) 22,045 (7.0) 12 5,847 (1.85) 372,234 325,893 (87.6) 22,011 (5.9) 15 3,089 (0.83)
9 314,169 269,534 (78.7) 30,238 (9.6) 8 5,579 (1.78) 325,268 275,806 (84.8) 24,374 (7.5) 11 4,497 (1.38)
10 331,619 169,194 (81.3) 63,531 (19.2) 4 40,606 (12.24) 364,398 327,766 (89.9) 41,911 (11.5) 8 4,579 (1.26)
Overall 3,861,006 2,569,124 (66.5) 180,747 (4.7) 14 92,277 (2.39) 4,016,251 3,250,814(80.9) 149,850 (3.7) 22 34,793 (0.87)