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Table I. Results of the uni- and multivariable analysis

Univariable analysis
 Multivariable analysis clinical history modela
 Multivariable analysis clinical history and CAT modelb
Variable OR 95% CI P OR 95% CI P OR 95% CI P
Age (per year) 1.03 0.96–1.09 0.44
Number of deliveries 2.05 1.23–3.43 0.006 2.14 1.27–3.63 0.004 2.05 1.17–3.58 0.01
Induced abortion 1.59 0.77–3.29 0.21
Secondary infertility 1.59 0.87–2.88 0.13
Duration of subfertility 1.02 1.00–1.03 0.08 1.01 1.00–1.03 0.11 1.01 1.00–1.03 0.38
History of Pelvic inflammatory disease 3.48 1.06–11.4 0.04 3.28 0.95–11.3 0.06 3.27 0.88–12.2 0.08
History of Sexually transmitted disease 1.15 0.33–3.98 0.82
Intra-uterline contraceptive device use in history 2.40 0.67–8.59 0.18
Pelvic surgery 2.93 0.86–9.97 0.09 3.18 0.89–11.4 0.08 4.49 1.10–14.7 0.03
CAT positivity 4.30 2.09–8.83 <0.001 4.07 1.88–8.81 <0.001

OR, odds ratio; CI, confidence interval; P = p-value.

aBackward selection procedure.

bBackward selection procedure with forced entry of duration of subfertility.





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