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Published on: August 25, 2014
Increased time to pregnancy is associated with suboptimal neurological condition of 2-year-olds
Jorien Seggers1, Pamela Schendelaar, Arend F Bos
1Department of Paediatrics, Division of Developmental Neurology, University of Groningen, University Medical Center Groningen, The Netherlands.
Insights
Longer time to pregnancy (TTP) in subfertile couples is linked to poorer neurological development in their children. This finding suggests subfertility may contribute to neurodevelopmental issues in offspring.
Area of Science:
- Reproductive Medicine
- Developmental Neuroscience
- Pediatric Neurology
Background:
- Subfertility affects a significant number of couples seeking assisted reproductive technologies.
- The long-term neurodevelopmental outcomes of children born after subfertility treatments are of growing interest.
- Understanding factors influencing child development in this population is crucial for parental counseling and clinical practice.
Purpose of the Study:
- To investigate the association between time to pregnancy (TTP) and the neurological condition of 2-year-old children born to subfertile parents.
- To determine if TTP is a predictive factor for minor neurological dysfunction (MND) in offspring.
Main Methods:
- A prospective, assessor-blinded follow-up study of 209 singletons from the Groningen assisted reproductive technique cohort.
- Cross-sectional analyses were performed using TTP data (in decimal years) from fertility charts.
- Minor neurological dysfunction (MND) was assessed using the Hempel examination at 2 years of age.
Main Results:
- Minor neurological dysfunction (MND) was identified in 7.7% of the children.
- Children with MND exhibited a significantly longer TTP (median 4.1 years) compared to those without MND (median 2.8 years).
- Logistic regression revealed a statistically significant association between increased TTP and MND, even after adjusting for gestational age, parental age, and education (OR=1.30).
Conclusions:
- Increased time to pregnancy is associated with suboptimal neurological development in 2-year-old children.
- These findings suggest that subfertility itself, or factors related to it, may play a role in the development of neurodevelopmental problems in offspring.
- Further research is warranted to elucidate the mechanisms linking subfertility and neurodevelopmental outcomes.
Objective:
To evaluate whether time to pregnancy (TTP) is associated with neurological condition of 2-year-old children born to subfertile parents.
Design:
Data collected in a prospective, assessor-blinded follow-up study were used for cross-sectional analyses.
Patients:
Participants were the singletons of the Groningen assisted reproductive technique cohort study: all children were born to subfertile couples (n=209). The active waiting TTP of the couples obtained from fertility charts was recorded in years and months, and was converted to decimal years.
Main Outcome Measure:
The presence of minor neurological dysfunction (MND), assessed with the Hempel examination.
Results:
MND was present in 16 (7.7%) children. TTP of children with MND (median 4.1, range 1.6-13.2) was significantly longer than that of children without MND (median 2.8, range 0.1-13.3; Mann-Whitney U test p=0.014). Logistic regression analysis on the contribution of TTP to MND resulted in a crude OR of 1.27 (95% CI 1.06 to 1.54). After correction for gestational age, parental age and parental level of education, the association remained statistically significant: OR=1.30 (95% CI 1.05 to 1.61).
Conclusions:
Increased TTP was associated with suboptimal neurological development in 2-year-old children. This suggests that subfertility and its determinants are involved in the genesis of neurodevelopmental problems.
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