Evidence map›Paper›PMID 35775508›Full record

ArticleAsian journal of andrology

Effect of advanced paternal age on reproductive outcomes in IVF cycles of non-male-factor infertility: a retrospective cohort study.

Xin-Mei Lu, Yu-Bing Liu, Dou-Dou Zhang, Xiang Cao, Tian-Cheng Zhang, Miao Liu, Hui-Juan Shi, Xi Dong, Su-Ying Liu

Open access · goldAbstract read
In one paragraph

Article in Asian journal of andrology. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.5field-weighted citation impact, top 18% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

12 citing papers in PubMed, 9 citations in OpenAlex.

  1. Trial
  2. Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Semen Characteristics and Embryo Outcomes in IVF.Journal of family & reproductive health · 2025
    Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 4 institutions in 1 country.

Xin-Mei LuReproductive Medicine Center, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai 200032, China.
Yu-Bing LiuCenter for Reproductive Medicine, Tenth People's Hospital of Tongji University, 301 Middle Yanchang Road, Shanghai 200072, China.
Dou-Dou ZhangReproductive Medicine Center, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai 200032, China.
Xiang CaoReproductive Medicine Center, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai 200032, China.
Tian-Cheng ZhangNHC Key Lab of Reproduction Regulation, Shanghai Institute for Biomedical and Pharmaceutical Technologies, Pharmacy School, Fudan University, No. 2140 Xietu Road, Shanghai 200032, China.
Miao LiuReproductive Medicine Center, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai 200032, China.
Hui-Juan ShiNHC Key Lab of Reproduction Regulation, Shanghai Institute for Biomedical and Pharmaceutical Technologies, Pharmacy School, Fudan University, No. 2140 Xietu Road, Shanghai 200032, China.
Xi DongReproductive Medicine Center, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai 200032, China.
Su-Ying LiuReproductive Medicine Center, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai 200032, China.
Fudan University · CNZhongshan Hospital · CNShanghai Institute of Pharmaceutical Industry · CNTongji University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Advanced paternal age has been overlooked, and its effect on fertility remains controversial. Previous studies have focused mainly on intracytoplasmic sperm injection (ICSI) cycles in men with oligozoospermia. However, few studies have reported on men with semen parameters within reference ranges. Therefore, we conducted a retrospective cohort study analyzing the reproductive outcomes of couples with non-male-factor infertility undergoing in vitro fertilization (IVF) cycles. In total, 381 cycles included were subgrouped according to paternal age (<35-year-old, 35-39-year-old, or ≥40-year-old), and maternal age was limited to under 35 years. Data on embryo quality and clinical outcomes were analyzed. The results showed that fertilization and high-quality embryo rates were not significantly different (all P > 0.05). The pregnancy rate was not significantly different in the 35-39-year-old group (42.0%; P > 0.05), but was significantly lower in the ≥40-year-old group (26.1%; P < 0.05) than that in the <35-year-old group (40.3%). Similarly, the implantation rate significantly decreased in the ≥40-year-old group (18.8%) compared with that in the <35-year-old group (31.1%) and 35-39-year-old group (30.0%) (both P < 0.05). The live birth rate (30.6%, 21.7%, and 19.6%) was not significantly different across the paternal age subgroups (<35-year-old, 35-39-year-old, and ≥40-year-old, respectively; all P > 0.05), but showed a declining trend. The miscarriage rate significantly increased in the 35-39-year-old group (44.8%) compared with that in the <35-year-old group (21.0%; P < 0.05). No abnormality in newborn birth weight was found. The results indicated that paternal age over 40 years is a key risk factor that influences the assisted reproductive technology success rate even with good semen parameters, although it has no impact on embryo development.

Indexed as

OligospermiaPaternal AgeAdultFemaleFertilization in VitroHumansInfant, NewbornMalePregnancyReproductive Techniques, AssistedRetrospective StudiesSemenembryo developmentfertilizationimplantationin vitropaternal agepregnancysperm

Identifiers

PMID35775508
PMCPMC10069682
OpenAlexW4283775687

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.