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Table 2 Prevalence of Anti-C.trachomatis antibodies (IgG and IgM) in the serum of unexplained infertility cases in relation to the type and duration of infertility

From: Screening for Chlamydia trachomatis in Egyptian women with unexplained infertility, comparing real-time PCR techniques to standard serology tests: case control study

Anti-C.trachomatis antibodies Type of infertility Total (n = 50) Duration of infertility
1ry (n = 36) 2ry (n = 14) <5 years (n = 26) >5 years (n = 24)
Data presented with frequency (%)
IgM + ve 1.0 (2.8 %) 2.0 (14.3 %) 3.0 (6 %) 2.0 (7.7 %) 1.0 (2.9 %)
IgM-ve 35 (97.2 %) 12 (85.7 %) 47 (94 %) 24 (92.3 %) 34 (97.1 %)
IgG + ve 14 (38.9 %) 4.0 (28.6 %) 18 (36 %) 9.0 (34.6 %) 9.0 (25.7 %)
IgG –ve 19 (52.7 %) 10 (71.4 %) 29 (58 %) 15 (57.6 %) 24 (68.6 %)
Equivocal IgG 2.0 (5.6 %) 1.0 (7.1 %) 3.0 (6 %) 2.0 (7.7 %) 2.0 (5.7 %)
The mean ratios for anti-C.trachomatis IgG and IgM using the ELISA technique.
Data presented with mean ± S.D P   p
Ratio of IgG* 1.29 ± 1.0 1.19 ± 1.0 0.63 1.22 ± 0.9 1.31 ± 1.0 0.52
Ratio of IgM* 0.37 ± 0.2 0.42 ± 0.3 0.52 0.38 ± 0.2 0.37 ± 0.2 0.42
  1. *Values are expressed in terms of mean ± S.D.; p-value, ratios >1.1 considered positive and <0.9 considered negative
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