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Table 1 Comparison of the clinical and demographic characteristics between the unexplained infertility cases and the controls

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

Variable Cases (n = 50) Controls (n = 44) p-values
Age (yrs)* 30.78 (19-41) 30.68 (19-40) 0.893
Body mass index (kg/m2)* 30.26 ± 2.21 31.07 ± 1.69 0.211
Duration of Infertility (yrs)* 3.93 (2.5-10) 5.0 (2-16) 0.041
< 5 years 26 (52 %) 31 (70.5 %) 0.068
≥5 years 24 (48 %) 13 (29.5 %)  
Type of infertility    
Primary 36 (72 %) 35 (79.5 %) 0.396
Secondary 14 (28 %) 9 (20.5 %)  
Previous parity 9 (18 %) 6 (13.6 %) 0.564
Previous abortion 10 (20 %) 6 (13.6 %) 0.413
Previous ICSI/IUI 17 (34 %) 9 (20.5 %) 0.308
Anti C.trachomatis IgM + ve 3/50 (6 %) 0/44 (0 %) 0.099
Anti C.trachomatis IgG + ve 18 (36 %) 8 (18.2 %) 0.054
Ratio of IgM* 0.37 ± 0.26 0.59 ± 0.24 < 0.05
Ratio of IgG* 1.26 ± 0.99 0.87 ± 0.63 0.03
PCR positive 3/50 (6 %) 0/44 (0 %) 0.09
Antisperm Abs positive 3/50 (6 %) 1/44 (2.3 %) 0.372
  1. *Values are expressed in terms of mean ± S.D. Other values are expressed in terms of frequency and %. S stands for significant (p < 0.05); NS stands for non-significant
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