| Title |
The effect of pre-pregnancy hair dye exposure on infant birth weight: a nested case-control study
|
|---|---|
| Published in |
BMC Pregnancy and Childbirth, May 2018
|
| DOI | 10.1186/s12884-018-1782-5 |
| Pubmed ID | |
| Authors |
Chao Jiang, Qingzhi Hou, Yaling Huang, Juan Ye, Xiaolian Qin, Yu Zhang, Wen Meng, Qiuyan Wang, Yonghua Jiang, Haiying Zhang, Mujun Li, Zengnan Mo, Xiaobo Yang |
| Abstract |
Limited evidences were reported about the risk of pre-pregnancy hair dye use or irregular menstruation with abnormal birth weight during pregnancy, and their joint effects were also unknown. The aim of our study was to explore whether the pre-pregnancy exposure of hair dye and irregular menstruation were associated with the risk of abnormal birth weight. We conducted a nested case-control study from a prospective cohort of 6203 pregnant women. Low birth weight study included 315 mother-infant pairs (105 LBW cases and 210 matched controls), and macrosomia study included 381 mother-infant pairs (127 macrosomia cases and 254 matched controls). Meanwhile, lifestyle information including hair dying custom and menstrual history were collected by face-to-face questionnaires and birth outcomes were extracted from the medical records. The logistic regressions models were used to analyze the join effect of irregular menstruation and hair dye use. Pre-pregnancy hair dye use was associated with increased risk of LBW (adjusted OR = 1.71, 95% CI: 1.01-2.92, P = 0.048). Irregular menstruation had high risk of LBW (adjusted OR = 2.79, 95% CI: 1.53-5.09, P = 0.001) and macrosomia (adjusted OR = 1.93, 95% CI: 1.09-3.44, P = 0.023). Additionally, in the LBW study, women who used hair dye with pre-pregnancy BMI < 18.5 kg/m2 had higher OR than those with only one risk factor (3.07 vs 2.53, P trend = 0.015), and women with both hair dye use and irregular menstruation also had higher risk than those with only one factor (4.53 vs 2.07, P trend = 0.05). Moreover, in macrosomia study, women with irregular menstruation and pre-pregnancy BMI ≥ 24 kg/m2 had higher risk than those with one factor (13.31 vs 2.09, P trend = 0.001). Our study showed that either pre-pregnancy hair dye use or irregular menstruation was associated with abnormal birth weight, especially, their joint effects could furthermore increase the risk of low birth weight infants when these two factors existed simultaneously. |
X Demographics
The data shown below were collected from the profiles of 3 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United Kingdom | 1 | 33% |
| Unknown | 2 | 67% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 3 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 60 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 60 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Master | 8 | 13% |
| Researcher | 6 | 10% |
| Student > Bachelor | 6 | 10% |
| Student > Ph. D. Student | 4 | 7% |
| Professor | 3 | 5% |
| Other | 8 | 13% |
| Unknown | 25 | 42% |
| Readers by discipline | Count | As % |
|---|---|---|
| Medicine and Dentistry | 16 | 27% |
| Nursing and Health Professions | 8 | 13% |
| Pharmacology, Toxicology and Pharmaceutical Science | 2 | 3% |
| Biochemistry, Genetics and Molecular Biology | 1 | 2% |
| Mathematics | 1 | 2% |
| Other | 5 | 8% |
| Unknown | 27 | 45% |
Attention Score in Context
This research output has an Altmetric Attention Score of 12. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 30 January 2024.
All research outputs
#2,834,725
of 25,260,058 outputs
Outputs from BMC Pregnancy and Childbirth
#775
of 4,721 outputs
Outputs of similar age
#56,058
of 333,982 outputs
Outputs of similar age from BMC Pregnancy and Childbirth
#34
of 151 outputs
Altmetric has tracked 25,260,058 research outputs across all sources so far. Compared to these this one has done well and is in the 88th percentile: it's in the top 25% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 4,721 research outputs from this source. They typically receive more attention than average, with a mean Attention Score of 9.2. This one has done well, scoring higher than 83% of its peers.
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We're also able to compare this research output to 151 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 78% of its contemporaries.