Table 3 Multivariable analysis of the association of the variables with CLBR

Age

0.90 (0.89–0.90)

< 0.0001

0.93 (0.92–0.94)

< 0.0001

BMI

0.98 (0.97–0.99)

< 0.0001

0.98 (0.97–1.00)

0.0062

Group 1 to Group2

2.66 (2.48–2.86)

< 0.0001

2.07 (1.89–2.26)

0.0003

Group1 to Group 3

5.18 (4.66–5.76)

< 0.0001

3.15 (2.75–3.62)

< 0.0001

AFC

1.08 (1.07–1.08)

< 0.0001

1.03 (1.02–1.03)

< 0.0001

No. previous treatment cycles/patient

0.72 (0.69–0.76)

< 0.0001

0.79 (0.73–0.86)

< 0.0001

Duration of infertility

0.94 (0.93–0.95)

< 0.0001

0.98 (0.97–0.99)

0.0002

Unexplained

1

1

Tubal

1.01(0.94–1.08)

0.8696

0.92 (0.84–1.01)

0.0856

Endometriosis

1.20 (1.06–1.35)

0.0032

1.26 (1.08–1.47)

0.0036

Anovulatory

0.66 (0.60–0.73)

< 0.0001

1.13 (0.99–1.28)

0.0706

Male factor

0.92 (0.86–0.98)

0.0158

1.03 (0.94–1.12)

0.5714