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Effects of greenness on preterm birth: A national longitudinal study of 3.7 million singleton births

Authors :
Lina Zhang
Shuyan Shi
Shenpeng Wu
Ying Yang
Jihong Xu
Ya Zhang
Qiaomei Wang
Haiping Shen
Yiping Zhang
Donghai Yan
Zuoqi Peng
Cong Liu
Weidong Wang
Yixuan Jiang
Su Shi
Renjie Chen
Haidong Kan
Yuan He
Xia Meng
Xu Ma
Source :
The Innovation, Vol 3, Iss 3, Pp 100241- (2022)
Publication Year :
2022
Publisher :
Elsevier, 2022.

Abstract

Exposure to greenness may lead to a wide range of beneficial health outcomes. However, the effects of greenness on preterm birth (PTB) are inconsistent, and limited studies have focused on the subcategories of PTB. A total of 3,751,672 singleton births from a national birth cohort in mainland China were included in this study. Greenness was estimated using the satellite-based Normalized Difference Vegetation Index (NDVI) and Enhanced Vegetation Index with 500-m and 1,000-m buffers around participants’ addresses. The subcategories of PTB (20–36 weeks) included extremely PTB (EPTB, 20–27 weeks), very PTB (VPTB, 28–31 week), and moderate-to-late PTB (MPTB, 32–36 weeks). Gestational age (GA) was included as another birth outcome. We used logistic regression models and multiple linear regression models to analyze these associations throughout the entire pregnancy. We found inverse associations between greenness and PTB and positive associations between greenness and GA. Specifically, an increase of 0.1 NDVI exposure within a 500-m buffer throughout the entire pregnancy was significantly associated with decreases in PTB (odds ratio [OR], 0.930; 95% confidence interval [CI], 0.927–0.932), EPTB (OR, 0.820; 95% CI, 0.801–0.839), VPTB (OR, 0.913; 95% CI, 0.908–0.919), MPTB (OR, 0.934; 95% CI, 0.931–0.936), and an increase in GA (β = 0.050; 95% CI, 0.049–0.051 weeks). These results suggest the potential protective effects of greenness on PTB and its subcategories: MPTB, VPTB, and EPTB in China.

Details

Language :
English
ISSN :
26666758
Volume :
3
Issue :
3
Database :
Directory of Open Access Journals
Journal :
The Innovation
Publication Type :
Academic Journal
Accession number :
edsdoj.9e3b4035760430ea1e91a05f716cb00
Document Type :
article
Full Text :
https://doi.org/10.1016/j.xinn.2022.100241