Evidence map›Paper›PMID 33823839›Full record

ArticleBMC public health2021

Seasonality in extra-pulmonary tuberculosis notifications in Germany 2004-2014- a time series analysis.

Tanja Charles, Matthias Eckardt, Basel Karo, Walter Haas, Stefan Kröger

Abstract read
In one paragraph

Article in BMC public health, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing 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

3 citing papers in PubMed.

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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

5 authors.

Tanja CharlesDepartment for Infectious Disease Epidemiology, Robert Koch Institute, Berlin, Germany. CharlesT@rki.de.
Matthias EckardtDepartment for Infectious Disease Epidemiology, Robert Koch Institute, Berlin, Germany.
Basel KaroCentre for International Health Protection (ZIG), Robert Koch Institute, Berlin, Germany.
Walter HaasDepartment for Infectious Disease Epidemiology, Robert Koch Institute, Berlin, Germany.
Stefan KrögerDepartment for Infectious Disease Epidemiology, Robert Koch Institute, Berlin, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSeasonality in tuberculosis (TB) has been found in different parts of the world, showing a peak in spring/summer and a trough in autumn/winter. The evidence is less clear which factors drive seasonality. It was our aim to identify and evaluate seasonality in the notifications of TB in Germany, additionally investigating the possible variance of seasonality by disease site, sex and age group.

methodsWe conducted an integer-valued time series analysis using national surveillance data. We analysed the reported monthly numbers of started treatments between 2004 and 2014 for all notified TB cases and stratified by disease site, sex and age group.

resultsWe detected seasonality in the extra-pulmonary TB cases (N = 11,219), with peaks in late spring/summer and troughs in fall/winter. For all TB notifications together (N = 51,090) and for pulmonary TB only (N = 39,714) we did not find a distinct seasonality. Additional stratified analyses did not reveal any clear differences between age groups, the sexes, or between active and passive case finding.

conclusionWe found seasonality in extra-pulmonary TB only, indicating that seasonality of disease onset might be specific to the disease site. This could point towards differences in disease progression between the different clinical disease manifestations. Sex appears not to be an important driver of seasonality, whereas the role of age remains unclear as this could not be sufficiently investigated.

Indexed as

TuberculosisTuberculosis, PulmonaryGermanyHumansResearch DesignSeasonsGermanyInfectious disease surveillanceSeasonalityTime seriesTuberculosis

Identifiers

PMID33823839
PMCPMC8025493

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