Table 1 Comparison of HIV and STI testing of HIV negative MSM attending two general practices during three one-year periods
Clinic A: Nurse introduced in Period 3 | n | nt(%) | 95% CI | % Difference Period 1 to Period 2 | % Difference Period 2 to Period 3 |
|---|---|---|---|---|---|
HIV antibody | |||||
Period 1 | 1000 | 504 (50) | 47-54 | ||
Period 2 | 1011 | 523 (52) | 49-55 | 2 ( p = 0.39) | |
Period 3 | 1042 | 596 (57) | 54-60 | 5 ( p = 0.026) | |
Syphilis EIA # | |||||
Period 1 | 1000 | 522 (52) | 49-55 | ||
Period 2 | 1011 | 534 (53) | 50-56 | 1( p = 0.69) | |
Period 3 | 1042 | 630 (60) | 57-63 | 7 ( p < 0.01) | |
Urine Test | |||||
Period 1 | 1000 | 526 (53) | 50-56 | ||
Period 2 | 1011 | 572 (57) | 54-60 | 4 (p = 0.08) | |
Period 3 | 1042 | 649 (62) | 59-65 | 5 ( p = 0.024) | |
Anal Swab | |||||
Period 1 | 1000 | 477 (48) | 45-51 | ||
Period 2 | 1011 | 506 (50) | 47-53 | 2 (p = 0.39) | |
Period 3 | 1042 | 590 (57) | 54-60 | 7 (p < 0.01) | |
Complete Tests* | |||||
Period 1 | 1000 | 383 (38) | 35-41 | ||
Period 2 | 1011 | 411 (41) | 38-44 | 3 (p = 0.18) | |
Period 3 | 1042 | 489 (47) | 44-50 | 6 ( p < 0.01) | |
Clinic B: No Nurse | n | n t (%) | 95% CI | % Difference Period 1 to Period 2 | % Difference Period 2 to Period 3 |
HIV antibody | |||||
Period 1 | 3664 | 1429 (39) | 37- 41 | ||
Period 2 | 3836 | 1643 (43) | 41- 45 | 4 ( p < 0.001) | |
Period 3 | 3870 | 1442 (37) | 35- 39 | −6 (p < 0.001) | |
Syphilis EIA # | |||||
Period 1 | 3664 | 1498 (41) | 39- 43 | ||
Period 2 | 3836 | 1711 (45) | 43- 47 | 4 (p < 0.001) | |
Period 3 | 3870 | 1549 (40) | 38- 42 | −5 (p < 0.001) | |
Urine Test | |||||
Period 1 | 3664 | 1345 (37) | 35-39 | ||
Period 2 | 3836 | 1542 (40) | 38-42 | 3 (p < 0.001) | |
Period 3 | 3870 | 1369 (35) | 34-36 | −5 ( p < 0.01) | |
Anal Swab | |||||
Period 1 | 3664 | 922 (25) | 22-26 | ||
Period 2 | 3836 | 1148 (30) | 29- 31 | 5 ( p < 0.001) | |
Period 3 | 3870 | 1022 (26) | 25- 27 | −4 (p < 0.001) | |
Complete Tests* | |||||
Period 1 | 3664 | 755 (21) | 20-22 | ||
Period 2 | 3836 | 971 (25) | 24-26 | 4 (p < 0.001) | |
Period 3 | 3870 | 883 (23) | 22-24 | - 2 (p < 0.01) |