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Table 1 Comparison of characteristic features of pregnant and non-pregnant groups

From: Extended culture of cleavage embryo to blastocyst embryo is among the good predictors of successful outcome in vitrified-thawed ICSI cycles

Variable

Pregnant group = 298

Non-pregnant group = 744

P value

Agea

28.76 ± 5.0

28.85 ± 5.18

0.8

BMIa

31.06 ± 5.9

32.45 ± 5.9

0.002

Infertility durationa

4.17 ± 3.2

4.6 ± 3.5

0.038

Type of infertilityb

 Primary

160/553(28.5%)

393/553 (71.5)

0.16

 Secondary

120/480(25%)

360 /480) (75%)

 

Infertility causeb

 Male

125/465 (26.8%)

340/465 (73.2)

0.91

 PCOS

35/129(27.2)

94/129 (72.8)

 

 Unexplained

35/139 (25.2)

104/139 (74.8)

 

Endometrial thicknessa

10.82 ± 1.6

10.13 ± 2.06

 < 0.0001

No. of embryos Transferreda

3.35 ± 1.5

3.12 ± 1.60

0.035

  1. aData are presented as mean ± SD and were assessed using t test
  2. bData are presented as numbers (percentage)