Table 1 Socio-demographic characteristics of the study population and seroprevalence of Toxoplasma gondii infection
From: Seroprevalence of Toxoplasma gondii infection in arthritis patients in eastern China
Variables | Arthritis patients (n = 820) | Control subjects (n = 820) | Patients vs controls P* value | ||||
|---|---|---|---|---|---|---|---|
Sero-prevalence of T. gondii infection | Sero-prevalence of T. gondii infection | ||||||
No. tested | No. positive (%) | P* value | No. tested | No. positive (%) | P* value | ||
Age group (years) | |||||||
 ≤ 30 | 102 | 27 (26.5) | Reference | 114 | 18 (15.8) | Reference | 0.054 |
 31 – 40 | 154 | 32 (20.8) | 0.290 | 138 | 20 (14.5) | 0.775 | 0.161 |
 41 – 50 | 178 | 44 (24.7) | 0.746 | 166 | 23 (13.9) | 0.653 | 0.011 |
 51 – 60 | 189 | 30 (15.9) | 0.030 | 220 | 26 (11.8) | 0.309 | 0.234 |
 61 – 70 | 145 | 18 (12.4) | 0.005 | 133 | 15 (11.3) | 0.299 | 0.770 |
 >70 | 52 | 15 (28.9) | 0.754 | 49 | 5 (10.2) | 0.348 | 0.019 |
Gender | |||||||
 Male | 314 | 59 (18.8) | Reference | 366 | 41 (11.2) | Reference | 0.005 |
 Female | 506 | 107 (21.2) | 0.414 | 454 | 66 (14.5) | 0.159 | 0.008 |
Geographic region | |||||||
 Qingdao | 393 | 77 (19.6) | Reference | 380 | 53 (14.0) | Reference | 0.036 |
 Weihai | 427 | 89 (20.8) | 0.656 | 440 | 54 (12.3) | 0.478 | 0.001 |
Residence area | |||||||
 Urban | 379 | 68 (17.9) | Reference | 387 | 44 (11.4) | Reference | 0.036 |
 Rural | 441 | 98 (22.2) | 0.128 | 433 | 63 (14.6) | 0.177 | 0.001 |