Evidence map›Paper›PMID 29738560›Full record

ArticlePloS one2018

An indirect estimation of the population size of students with high-risk behaviors in select universities of medical sciences: A network scale-up study.

Homeira Sajjadi, Zahra Jorjoran Shushtari, Mohsen Shati, Yahya Salimi, Masoomeh Dejman, Meroe Vameghi, Salahedin Karimi, Zohreh Mahmoodi

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
2.1field-weighted citation impact, top 13% 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

10 citing papers in PubMed, 27 citations in OpenAlex.

  1. How Visible is the Sex Work in Iran?Medical journal of the Islamic Republic of Iran · 2025
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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 5 institutions in 2 countries.

Homeira SajjadiSocial Determinants of Health Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
Zahra Jorjoran ShushtariSocial Determinants of Health Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
Mohsen ShatiDepartment of Aging, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
Yahya SalimiSocial Development and Health Promotion Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran.
Masoomeh DejmanDepartment of Mental Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, United States of America.
Meroe VameghiSocial Welfare Management Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
Salahedin KarimiSocial Determinants of Health Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
Zohreh MahmoodiSocial Determinants of Health Research Center, Alborz University of Medical Sciences, Karaj, Iran.ORCID 0000-0002-7868-6941
University of Social Welfare and Rehabilitation Sciences · IRJahrom University of Medical Sciences · IRJohns Hopkins University · USKermanshah University of Medical Sciences · IRTabriz University of Medical Sciences · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundNetwork scale-up is one of the most important indirect methods of estimating the size of clandestine populations and people with high-risk behaviors. The present study is an indirect estimation of the population size of students with high-risk behaviors in select universities of medical sciences.

methodsA total of 801 students from two University of Medical Sciences at Tehran and Alborz University of Medical Sciences were selected through convenience sampling. Six subgroups of high-risk behaviors were examined in the study, including Tramadol use, cannabis use, opium use, alcohol consumption, extramarital heterosexual intercourse, and heterosexual intercourse in return for money. To estimate the social network size in the study population, each participant was asked to name their close student friends from the two select universities. Data were collected using a checklist designed for this purpose.

resultsThe participants' mean number of close friends from the selected medical universities was C = 8.14 (CI: 7.54-8.75). Within these social networks, friends with extramarital heterosexual intercourse (5.53%) and friends who consumed alcohol (4.92%) had the highest frequency, and friends who used opium (0.33%) had the lowest frequency. The variables of age, gender, marital status, type of residence and academic degree were significantly related to the likelihood of having close friends with certain high-risk behaviors (P<0.001).

conclusionAccording to the results obtained, alcohol consumption and extramarital heterosexual intercourse are very common among students. Special HIV prevention programs are therefore necessary for this age group.

Indexed as

Social NetworkingAdultAlcohol DrinkingCross-Sectional StudiesFemaleHumansIranMalePopulation DensityRisk-TakingSexual BehaviorStudentsSubstance-Related DisordersSurveys and QuestionnairesUniversitiesYoung Adult

Identifiers

PMID29738560
PMCPMC5940232
OpenAlexW2802424566

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.