Evidence map›Paper›PMID 36209135›Full record

ArticleNature communications2022

Spatial structure of city population growth.

Sandro M Reia, P Suresh C Rao, Marc Barthelemy, Satish V Ukkusuri

Abstract read
In one paragraph

Article in Nature communications, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
–field-weighted citation impact
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

6 citing papers in PubMed.

  1. Large cities lose their growth advantage as countries urbanize.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  2. Article
  3. Article
  4. A stochastic theory of urban metabolism.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  5. Article
  6. The angiogenic growth of cities.Journal of the Royal Society, Interface · 2024
    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

4 authors.

Sandro M ReiaLyles School of Civil Engineering, Purdue University, 550 Stadium Mall Avenue, West Lafayette, 47907, IN, USA.ORCID 0000-0001-5817-5020
P Suresh C RaoLyles School of Civil Engineering, Purdue University, 550 Stadium Mall Avenue, West Lafayette, 47907, IN, USA.ORCID 0000-0002-5982-3736
Marc BarthelemyUniversité Paris-Saclay, CNRS, CEA, Institut de physique théorique, Gif-surYvette, 91191, France.ORCID 0000-0003-0890-9713
Satish V UkkusuriLyles School of Civil Engineering, Purdue University, 550 Stadium Mall Avenue, West Lafayette, 47907, IN, USA. sukkusur@purdue.edu.ORCID 0000-0001-8754-9925

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We show here that population growth, resolved at the county level, is spatially heterogeneous both among and within the U.S. metropolitan statistical areas. Our analysis of data for over 3,100 U.S. counties reveals that annual population flows, resulting from domestic migration during the 2015-2019 period, are much larger than natural demographic growth, and are primarily responsible for this heterogeneous growth. More precisely, we show that intra-city flows are generally along a negative population density gradient, while inter-city flows are concentrated in high-density core areas. Intra-city flows are anisotropic and generally directed towards external counties of cities, driving asymmetrical urban sprawl. Such domestic migration dynamics are also responsible for tempering local population shocks by redistributing inflows within a given city. This spill-over effect leads to a smoother population dynamics at the county level, in contrast to that observed at the city level. Understanding the spatial structure of domestic migration flows is a key ingredient for analyzing their drivers and consequences, thus representing a crucial knowledge for urban policy makers and planners.

Indexed as

Emigration and ImmigrationPopulation GrowthCitiesDemographyHumansPopulation DynamicsUrban Population

Identifiers

PMID36209135
PMCPMC9547901

What OpenQuestion holds

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Registered trials

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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.