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

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

Anti-C.trachomatis antibodies	Type of infertility		Total (n = 50)	Duration of infertility
Anti-C.trachomatis antibodies	1ry (n = 36)	2ry (n = 14)	Total (n = 50)	<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

*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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