| Table 3: Results of studies of C. trachomatis infection and its relation to ectopic pregnancy (EP)* | ||||
|---|---|---|---|---|
| Study | City | Study group | C. trachomatis infection prevalence rate,* % | OR or RR |
| Svensson et al[43] | Lund, Sweden | Women with an EP | 65 | OR = 7.1 |
| Women with acute cervicitis | 69 | OR =18.6 | ||
| Women who had a cesarean section | 21 | OR = 1 | ||
| Hartford et al[44] | Los Angeles | Women with an EP and contralateral tubal disease | 50 | RR indeterminate |
| Women with an EP but no contralateral tubal disease | 0 | |||
| Brunham et al[45] | Winnipeg | Women with an EP | 56 | OR = 4.3 |
| Women with a normal pregnancy | 22 | |||
| Walters et al[46] | San Antonio, Tex. | Women with an EP | 82 | OR = 2.9 |
| Women with a normal pregnancy | 58 | |||
| Miettinen et al[47] | Tampere, Finland | Infertile women with a history of EP | 40 | RR = 5.7 |
| Infertile women with normal fallopian tubes | 7 | |||
| Robertson et al[48] | Southampton, England | Women with an EP | 76 | OR = 4.13 |
| Women with a normal pregnancy | 38 | |||
| Chaim et al[49] | Beer Sheva, Israel | Women with an EP | 32 | OR = 4.9 |
| Healthy women | 8 | |||
| *Determined by serologic testing for antibodies to C. trachomatis. | ||||