From: Patterns of syphilis testing in a large cohort of HIV patients in Ontario, Canada, 2000–2009
n observation | % tested | Unadjusted ratio of proportions (95%CI) | Adjusted ratio of proportions (95%CI) | |
---|---|---|---|---|
Calendar year | ||||
2000 | 1605 | 2.7 | ||
2001 | 1524 | 6.0 | ||
2002 | 1566 | 7.7 | ||
2003 | 1507 | 10.2 | ||
2004 | 1627 | 16.8 | ||
2005 | 1616 | 32.6 | ||
2006 | 1580 | 43.3 | ||
2007 | 1592 | 43.6 | ||
2008 | 2767 | 42.3 | ||
2009 | 3324 | 54.6 | ||
Each additional calendar year (a) | ||||
2003 cf 2002 | 1.59 (1.54, 1.69) | 1.53 (1.48, 1.58) | ||
2005 cf 2004 | 1.39 (1.36, 1.42) | 1.32 (1.30, 1.35) | ||
2009 cf 2008 | 1.05 (1.03, 1.08) | 0.98 (0.96, 1.01) | ||
STI risk status | ||||
MSM | 12,912 | 31.7 | 1.39 (1.27, 1.53) | 1.20 (1.11, 1.30) |
Non-MSM males | 2,877 | 22.6 | Referent | Referent |
Females | 2,642 | 26.2 | 1.17 (1.03, 1.32) | 1.03 (0.93, 1.14) |
Unknown | 277 | 47.3 | ||
Region | ||||
Toronto | 10,014 | 31.7 | 1.19 (1.11, 1.27) | 0.83 (0.78, 0.88) |
Ottawa | 2,527 | 26.9 | 0.89 (0.80, 0.99) | 0.70 (0.64, 0.77) |
Other | 6,167 | 27.8 | Referent | Referent |
Age (b) | ||||
<30 years | 576 | 41.8 | Referent | Referent |
30+ years | 18,132 | 29.4 | 0.72 (0.64, 0.81) | 0.89 (0.81, 0.97) |
Race/ethnicity | ||||
White | 13,322 | 28.6 | Referent | |
Black/African | 1,463 | 28.9 | 1.01 (0.90, 1.13) | |
Aboriginal | 1,092 | 32.6 | 1.13 (1.00, 1.27) | |
Other | 2,363 | 33.4 | 1.17 (1.08, 1.27) | |
Unknown | 468 | 42.5 | ||
Nature of care provided at OCS clinic | ||||
Primary | 4,242 | 44.5 | 1.74 (1.64, 1.84) | 1.34 (1.27, 1.41) |
Tertiary | 14,466 | 25.5 | Referent | Referent |
Diagnosed with HIV in current or preceeding year (b) | ||||
No | 18,330 | 29.1 | Referent | Referent |
Yes | 378 | 63.5 | 1.88 (1.73, 2.04) | 1.29 (1.19, 1.41) |
Syphilis testing in previous year (b) | ||||
Not tested | 13,995 | 18.3 | Referent | Referent |
Non-reactive | 3,755 | 62.0 | 4.90 (4.69, 5.12) | 1.75 (1.66, 1.84) |
Reactive | 888 | 73.6 | 5.45 (5.18, 5.73) | 2.01 (1.89, 2.15) |
Test result undetermined (c) | 70 | 35.7 | ||
Initiated HIV antiretoviral treatment (b) | ||||
Yes | 17,620 | 29.2 | 0.75 (0.68, 0.83) | 0.92 (0.86, 0.99) |
No | 1,088 | 38.6 | Referent | Referent |
Number of routine HIV tests in year (b, d) | ||||
None | 451 | 4.2 | 0.18 (0.11, 0.29) | 0.23 (0.14, 0.40) |
One | 1186 | 23.4 | Referent | Referent |
Two or more | 17071 | 30.9 | 1.32 (1.20, 1.45) | 1.27 (1.16, 1.40) |