Evidence map›Paper›PMID 26177479›Full record

ArticlePloS one2015

Stratified Sampling of Neighborhood Sections for Population Estimation: A Case Study of Bo City, Sierra Leone.

Roger Hillson, Joel D Alejandre, Kathryn H Jacobsen, Rashid Ansumana, Alfred S Bockarie, Umaru Bangura, Joseph M Lamin, David A Stenger

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2015. 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
1.1field-weighted citation impact, top 19% 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

6 citing papers in PubMed, 22 citations in OpenAlex.

  1. Advances in small area population estimation in the absence of national census data.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Review
  2. Article
  3. Article
  4. Article
  5. Article
  6. Spatially disaggregated population estimates in the absence of national population and housing census data.Proceedings of the National Academy of Sciences of the United States of America · 2018
    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

8 authors at 3 institutions in 2 countries.

Roger HillsonInformation Technology Division, Naval Research Laboratory, Washington, District of Columbia, United States of America.
Joel D AlejandreInformation Technology Division, Naval Research Laboratory, Washington, District of Columbia, United States of America.
Kathryn H JacobsenDepartment of Global and Community Health, George Mason University, Fairfax, Virginia, United States of America.
Rashid AnsumanaNjala University, Bo, Sierra Leone; Mercy Hospital Research Laboratory, Bo, Sierra Leone.
Alfred S BockarieNjala University, Bo, Sierra Leone; Mercy Hospital Research Laboratory, Bo, Sierra Leone.
Umaru BanguraMercy Hospital Research Laboratory, Bo, Sierra Leone.
Joseph M LaminMercy Hospital Research Laboratory, Bo, Sierra Leone.
David A StengerCenter for Bio/Molecular Science and Engineering, Naval Research Laboratory, Washington, District of Columbia, United States of America.
Njala University · SLGeorge Mason University · USNaval Research Laboratory Center for Bio/Molecular Science and Engineering

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

There is a need for better estimators of population size in places that have undergone rapid growth and where collection of census data is difficult. We explored simulated estimates of urban population based on survey data from Bo, Sierra Leone, using two approaches: (1) stratified sampling from across 20 neighborhoods and (2) stratified single-stage cluster sampling of only four randomly-sampled neighborhoods. The stratification variables evaluated were (a) occupants per individual residence, (b) occupants per neighborhood, and (c) residential structures per neighborhood. For method (1), stratification variable (a) yielded the most accurate re-estimate of the current total population. Stratification variable (c), which can be estimated from aerial photography and zoning type verification, and variable (b), which could be ascertained by surveying a limited number of households, increased the accuracy of method (2). Small household-level surveys with appropriate sampling methods can yield reasonably accurate estimations of urban populations.

Indexed as

CitiesPopulation DensityResidence CharacteristicsCluster AnalysisComputer SimulationHumansSample SizeSierra LeoneSurveys and QuestionnairesUncertaintyUrban Population

Identifiers

PMID26177479
PMCPMC4503693
OpenAlexW2341102212

What OpenQuestion holds

Textmetadata
LicenceCC0
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.