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Table 4 LINE1 methylation pyrosequencing assay for males

From: Global DNA methylation levels are altered by modifiable clinical manipulations in assisted reproductive technologies

Criteria for comparison

Groups (n)

Global methylation fraction (mean ± SD)

P value

ANOVA

Tukey’s post hoc test (vs controls)

 

Controls (33)

0.5091 ± 0.0463

–

–

Mode of egg fertilization

ICSI (19)

0.4739 ± 0.0339

0.0057

< 0.05

Non ICSI (37)

0.4809 ± 0.0434

< 0.05

Oxygen tension

20%(31)

0.4738 ± 0.0404

0.0044

< 0.01

5%(25)

0.4843 ± 0.0399

ns

Type of embryo transfer

Fresh (45)

0.4751 ± 0.0386

0.0033

< 0.01

Frozen (11)

0.4924 ± 0.0457

ns

Embryo transfer day

Day 3 (28)

0.4779 ± 0.0435

0.0067

< 0.05

Day 5 (28)

0.4791 ± 0.0375

< 0.05

  1. ANOVA analysis of variance; SD standard deviation; ICSI intracytoplasmic sperm injection; ns non significant
  2. Values in italics denote significance