[Web search data as health data? : Geographic differences, temporal trends, and topics of interest from internet search engine analyses in Germany]

Cancer incidence and digital information seeking in Germany: a retrospective observational study

Awareness is vital for cancer prevention. US studies show a strong link between web searches and cancer incidence. In Europe, the relationship remains unclear. This study characterizes regional and temporal relationships between cancer incidence and web searches and investigates the content of searches related to breast, cervical, colorectal, lung, prostate, and testicular cancer, brain tumors, and melanoma in Germany (July 2018-December 2019). Aggregate data from Google Ads Keyword Planner and national cancer registry data were analyzed. Spearman's correlation coefficient (rS) examined associations between cancer incidence and web search, repeated measures correlation (rrm) assessed time trends and searches were qualitatively categorized. The frequency of malignancy-related web searches correlated with cancer incidence (rS = 0.88, P = 0.007), e.g., breast cancer had more queries than the lower-incidence cervical cancer. Seasonally, incidence and searches followed similar patterns, peaking in spring and fall, except for melanoma. Correlations between entity incidence and searches (0.037 ≤ rrm ≤ 0.208) varied regionally. Keywords mainly focused on diagnosis, symptoms, and general information, with variations between entities. In Germany, web searches correlated with regional and seasonal incidence, revealing differences between North/East and South/West. These insights may help improve prevention strategies by identifying regional needs and assessing impact of awareness campaigns.

Patient Journey und krankheitsbezogene Nutzung digitaler Medien: Eine Querschnittsstudie unter Dermatologie-Patienten in Deutschland: Patient journey and disease-related digital media usage: A cross-sectional study among dermatology patients across Germany

Hintergrund und Ziele

Ziel dieser Studie war es, die Auswirkungen der Nutzung gesundheitsbezogener digitaler Medien auf die Arzt‐Patienten‐Beziehung und die Patient Journey (Weg des Patienten durch alle Phasen seiner Erkrankung) zu untersuchen, um positive Veränderungen in der dermatologischen Praxis zu bewirken.

Patienten und Methodik

Von Juni bis November 2022 füllten Personen mit Hautkrankheiten in Deutschland einen Fragebogen zur Bewertung der gesundheitsbezogenen Nutzung digitaler Medien, der E‐Health‐Kompetenz, des Einflusses der Nutzung digitaler Medien auf die Arzt‐Patienten‐Beziehung und die Patient Journey sowie soziodemografischer und gesundheitlicher Merkmale aus. Die Daten wurden deskriptiv und mittels linearer Regressionen analysiert.

Ergebnisse

Insgesamt wurden 919 Teilnehmer analysiert (medianes Alter: 47,00, Interquartilsbereich [28,00; 61,00] Jahre, weiblich: 53,6%, Nutzer digitaler Medien im Kontext der Erkrankung: 56,8%). Google und Online‐Enzyklopädien wurden am häufigsten vor und nach der dermatologischen Konsultation genutzt. Online‐Selbsthilfegruppen wurden von 76,3% der nicht behandelten Teilnehmer in Anspruch genommen. Die Nutzung digitaler Medien hatte keinen Einfluss auf die Arzt‐Patienten‐Beziehung und wirkte sich positiv auf die Patient Journey aus. Positive Auswirkungen wurden mit höherer E‐Health‐Kompetenz, Zufriedenheit mit der Qualität digitaler Medien, Bedeutung digitaler Medien, ländlichem Wohnsitz, höherem Bildungsniveau und Vertrauen in Dermatologen in Verbindung gebracht.

Schlussfolgerungen

Die dermatologische Versorgung in Arztpraxen kann vom Potenzial digitaler Gesundheitsmedien profitieren. Eine evidenzbasierte digitale Gesundheitsplattform ist erforderlich, um die E‐Health‐Kompetenz der Betroffenen zu erhöhen und ihre Zufriedenheit mit der Qualität digitaler Medien zu verbessern.

Patient journey and disease-related digital media usage: A cross-sectional study among dermatology patients across Germany

BACKGROUND AND OBJECTIVES

This study aimed to fill the gap of evidence-based data by examining the impact of health-related digital media use's impact on the patient-physician relationship and patient journey, with the goal of driving positive changes in office-based dermatological practice.

PATIENTS AND METHODS

German individuals with skin conditions completed a questionnaire assessing health-related digital media use, eHealth literacy, impact of digital media use on the patient-physician relationship and patient journey, and sociodemographic and health characteristics from June to November 2022, followed by descriptive analysis and linear regressions.

RESULTS

Overall, 919 participants were analyzed (median age: 47.00, interquartile range [28.00; 61.00] years, female: 53.6%, health-related digital media users: 56.8%). Google and online encyclopedias were commonly used before and after dermatological consultations. Online self-help groups were used by 75% of non-treated participants. Digital media use had no impact on the patient-physician relationship and a positive impact on the patient journey. Positive impacts were associated with higher eHealth literacy, satisfaction with digital media quality, importance of digital media, rural residence, high education, and trust in dermatologists.

CONCLUSIONS

The potential of health-related digital media in office-based dermatological care necessitates the drive of an evidence-based digital health platform to improve eHealth literacy and satisfaction with the quality of digital media among affected individuals.

Leveraging web search data in Germany to identify unmet needs of contraceptives on a population-based level: A longitudinal retrospective study

BACKGROUND

There are a variety of possible contraceptives available. While medical advice is an important resource for selecting the individual contraceptive, previous research has shown that the Internet has become an increasingly important source of health care information.

OBJECTIVES

This study aims to identify key trends in contraception-related web searches in Germany and thus allows conclusions about preferences and unmet needs with regard to pregnancy prevention.

DESIGN

Longitudinal retrospective study.

METHODS

Google Ads Keyword Planner was used to identify contraception-related keywords and their search volume in Germany and all federal states between 2018 and 2021. The keywords were categorized based on gender, hormonal/non-hormonal, and different contraceptive methods. Search volume and categories were analyzed for temporal trends, regional differences, and underlying socioeconomic variables.

RESULTS

The 1481 contraception-related keywords corresponded to 15,081,760 searches. In total, a 56% increase in searches/100,000 inhabitants was observed. Highest mean search volume was observed in categories "woman," "woman/non-hormonal" and "woman/non-hormonal/barrier," respectively, and in the federal state Hamburg, while the lowest was seen in North Rhine-Westphalia.

CONCLUSION

The increase in search volume reflects a high interest in contraception, particularly in non-hormonal female methods. This stands in contrast to the limited number of effective non-hormonal contraceptives available and points to an unmet need. In addition, the low search volume for male contraceptives demonstrates gender-specific responsibilities regarding family planning in German society.

Health Literacy Analytics of Accessible Patient Resources in Cardiovascular Medicine: What are Patients Wanting to Know?

Introduction

There remains an increasing utilization of internet-based resources as a first line of medical knowledge. Among patients with cardiovascular disease, these resources often are relied upon for numerous diagnostic and therapeutic modalities. However, the reliability of this information is not fully understood. The aim of this study was to provide a descriptive profile on the literacy quality, readability, and transparency of publicly available educational resources in cardiology.

Methods

The frequently asked questions and associated online educational articles on common cardiovascular diagnostic and therapeutic interventions were investigated using publicly available data from the Google RankBrain machine learning algorithm after applying inclusion and exclusion criteria. Independent raters evaluated questions for Rothwell's Classification and readability calculations.

Results

Collectively, 520 questions and articles were evaluated across 13 cardiac interventions, resulting in 3,120 readability scores. The sources of articles were most frequently from academic institutions followed by commercial sources. Most questions were classified as "Fact" at 76.0% (n = 395), and questions regarding "Technical Details" of each intervention were the most common subclassification at 56.3% (n = 293).

Conclusions

Our data show that patients most often are using online search query programs to seek information regarding specific knowledge of each cardiovascular intervention rather than form an evaluation of the intervention. Additionally, these online patient educational resources continue to not meet grade-level reading recommendations.

Impact of asthma in Europe: A comparison of web search data in 21 European countries

Background

Asthma is a chronic inflammatory disorder of the airways and one of the most important non-communicable diseases worldwide. Analyzing crowdsourced data can help understand public interest and unmet needs as well as potential factors influencing search behavior.

Objective

The study aimed to investigate asthma-related web search data in Europe to identify possible regional and seasonal variations and to assess public interest.

Methods

Google Ads Keyword Planner was used to measure search volume for search terms related to asthma, allergic asthma, and bronchial asthma in 21 European countries between January 2018 and December 2021. The top 10 keywords of each country were categorized qualitatively. Search volume per 100 000 inhabitants was descriptively assessed in terms of regional and seasonal trends. Spearman correlations between search volume and pollen concentration as well as coronavirus disease (COVID-19) cases were investigated.

Results

The median search volume per 100 000 inhabitants for asthma and allergic asthma was highest in Northern and Western Europe, while the highest search volume for bronchial asthma was observed in Western and Eastern regions. A seasonal trend was identified for all search terms and in all regions. Correlations were found between search frequency and pollen load and search behavior and COVID-19 cases. Overall, Europeans were most interested in the diseases in general, their treatment options, and symptoms.

Conclusion

These results highlighted the need for reliable and region-specific information about the disease and for public campaigns to improve asthma control. The study also emphasizes the importance of using crowdsourced data for a more encompassing overview beyond conventional healthcare data.

Analyzing web searches for axial spondyloarthritis in Germany: a novel approach to exploring interests and unmet needs

Axial spondyloarthritis (axSpA) is an underdiagnosed condition with a high disease burden. Due to delayed diagnosis and limited access to specialist care, conventional health data might not sufficiently capture the perspective of affected individuals. The aim of this study was to assess public interest, unmet needs, and disease burden of axSpA in Germany through the analysis of thematic, geographic, and temporal patterns in national web search data. Google Ads Keyword Planner was used to identify axSpA-related keywords and their monthly search volume in Germany between January 2017 and December 2020. Identified keywords were qualitatively categorized into six categories. Overall, 265 axSpA-related keywords with a search volume of 3,881,490 queries were identified. Nearly 81% of the total search volume was assigned to the category terms and definition, while 19% referred to either outcomes, symptoms, diagnosis, management, or causes. In the category outcomes, prognostic outcomes like "life expectancy" generated more searches than physical manifestations like "pain". Less populated cities showed significantly more searches per 100,000 inhabitants than larger cities. Searches were seasonally stable with a Germany-wide peak in July 2017. This study provides an overview of public interest in axSpA based on web search data in Germany. The identified search patterns could be used to guide public health campaigns and optimize axSpA management in Germany.

Eczema-related Web Search Data in Sweden: Investigating Search Patterns and the Influence of Weather

As atopic eczema is triggered by environmental factors, such as temperature, differences in disease burden between and within countries are possible. One method to study this phenomenon is to perform web-search analysis, since the internet is commonly used to retrieve health-related information. This study, investigating the Google search volume regarding eczema in Swedish counties between April 2017 and March 2021, revealed a continuous increase in number of searches and that the search volume was higher in Northern than Southern Sweden. Gotland had the most searches per 100,000 inhabitants. In general, there was a negative correlation between search volume and temperature (r=-0.315, p < 0.001) and hours of sunshine (r=-0.213, p < 0.001), whereas there was a positive association between search volume and wind (r=0.229, p < 0.001). Search engine analysis is a rapid and cost-effective method of examining search behaviour regarding disease among the general population within a country and, thus, can enable the identification of regions with specific interests and needs.

[Atopic dermatitis-identifying needs in the German population by internet search queries]

Hintergrund

Das Internet ist eine der wichtigsten Informationsquellen für gesundheitliche Themen für die Allgemeinbevölkerung. Deshalb kann die Analyse von Internetsuchmaschinen dabei helfen, die gesellschaftlichen Interessen und Bedürfnisse bezüglich Erkrankungen zu erfassen.

Ziel

Ziel dieser Studie war es, die Suchanfragen zu atopischer Dermatitis (AD) in Bezug auf Häufigkeit, Interessenschwerpunkt und zeitliches Auftreten in allen deutschen Bundesländern zu untersuchen, um mögliche regionale Unterschiede zu identifizieren.

Material und Methoden

Mithilfe des Google Ads Keyword Planner wurden AD relevante Keywords inklusive deren monatlichen Suchvolumens zwischen Januar 2017 und Dezember 2020 identifiziert, die in Interessenschwerpunkte unterteilt wurden.

Ergebnisse

Es wurden 1419 Keywords gefunden, die ein Suchvolumen von 14.817.610 Anfragen hatten. Das größte Suchvolumen hatte die Kategorie Allgemein (n = 5.970.840), jedoch wurden der Kategorie Lokalisation die meisten Keywords zugeordnet (n = 348). Rund 60 % der Keywords zu Lokalisation bezogen sich auf AD im Gesicht. Von allen Bundesländern hatten Bremen und Hamburg das größte Suchvolumen pro 100.000 Einwohner. Mit über 70 % war ein enormer Anstieg im Suchvolumen zu beobachten, der v. a. 2020 sichtbar wurde.

Diskussion

Durch diese Internetsuchmaschinenanalyse konnte verdeutlicht werden, welche AD-relevanten Aspekte von besonderer Bedeutung für die Bevölkerung waren, was dabei helfen kann, Informationskampagnen zielgerichtet anzupassen. Zudem unterstreicht die Studie die immer größer werdende Relevanz des Internets als Informationsquelle für gesundheitliche Themen.

Zusatzmaterial online

Die Online-Version dieses Beitrags (10.1007/s00105-022-04974-x) enthält zusätzliche Tabellen. Beitrag und Zusatzmaterial stehen Ihnen im elektronischen Volltextarchiv auf https://www.springermedizin.de/der-hautarzt zur Verfügung. Sie finden das Zusatzmaterial am Beitragsende unter „Supplementary Information“.