Evidence map›Paper›PMID 25879616›Full record

ArticleBMC public health2015

Elimination of 'the Glasgow effect' in levels of dental caries in Scotland's five-year-old children: 10 cross-sectional surveys (1994-2012).

Yvonne I Blair, Alex D McMahon, Wendy Gnich, David I Conway, Lorna M D Macpherson

Abstract read
In one paragraph

Article in BMC public health, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. 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

5 authors.

Yvonne I BlairOral Health Directorate, NHS Greater Glasgow & Clyde, Glasgow Dental Hospital, 378 Sauchiehall St, Glasgow, G2 3JZ, Scotland, UK. yvonne.blair@glasgow.ac.uk.
Alex D McMahonCommunity Oral Health Section, University of Glasgow Dental School, 378 Sauchiehall St, Glasgow, G2 3JZ, Scotland, UK. alex.mcmahon@glasgow.ac.uk.
Wendy GnichCommunity Oral Health Section, University of Glasgow Dental School, 378 Sauchiehall St, Glasgow, G2 3JZ, Scotland, UK. wendy.gnich@glasgow.ac.uk.
David I ConwayCommunity Oral Health Section, University of Glasgow Dental School, 378 Sauchiehall St, Glasgow, G2 3JZ, Scotland, UK. david.conway@glasgow.ac.uk.
Lorna M D MacphersonCommunity Oral Health Section, University of Glasgow Dental School, 378 Sauchiehall St, Glasgow, G2 3JZ, Scotland, UK. lorna.macpherson@glasgow.ac.uk.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSocioeconomic inequalities in health within Glasgow, Scotland, are among the widest in the world. This is largely attributed to socio-economic conditions. The 'Glasgow Effect' labels the finding that the high prevalence of some diseases cannot be fully explained by a conventional area-based socio-economic metric. This study aimed to investigate whether differences in dental caries between Glasgow's resident children and those in the Rest of Scotland could be explained by this metric and whether differences were of fixed magnitude, over time.

methodsScotland's National Dental Inspection Programme (NDIP) cross-sectional data for five-year-old children in years: 1994, 1996, 1998, 2000, 2003, 2004, 2006, 2008, 2010, and 2012 (n = 92,564) were utilised. Endpoints were calculated from the mean decayed, missing and filled teeth score (d3mft) and percentage with obvious decay experience. Socioeconomic status was measured by DepCat, a Scottish area-based index. The Glasgow Effect was estimated by the odds-ratio (OR) of decay for Glasgow versus the Rest of Scotland adjusted by age, gender and DepCat. Inequalities were also assessed by the Significant Caries Index (SIC), SIC 10, and Scottish Caries Inequality Metric (SCIM 10).

resultsDecay levels for deprived Glasgow children have reduced to be similar to those in the Rest of Scotland. In 1993, OR for d3mft > 0 for those living in the Glasgow area was 1.34(1.10, 1.64), p = 0.005. This reduced below unity in 2012, OR = 0.85(0.77, 0.93), p < 0.001. There were downward trends (p < 0.001) in absolute inequality measured by SIC and SIC 10 in each of the geographic areas. The SCIM 10 demonstrated further reductions in inequality across the population. The downward trends for all the inequality measures were larger for Glasgow than the Rest of Scotland.

conclusionsOver the interval, Glasgow has eliminated the earlier extra health inequalities. When comparing 'like for like' by socioeconomic status there is now no higher level of dental caries in the Greater Glasgow area.

Indexed as

Health Status DisparitiesUrban PopulationChild, PreschoolCross-Sectional StudiesDental CariesFemaleHumansMalePrevalenceScotlandSocial Class

Identifiers

PMID25879616
PMCPMC4352263

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