• Age-specific mortality and the role of living remotely: The 1918-20 influenza pandemic in Kautokeino and Karasjok, Norway 

      Nygaard, Ingrid Hellem; Dahal, Sushma; Chowell, Gerardo; Sattenspiel, Lisa; Sommerseth, Hilde Leikny; Mamelund, Svenn-Erik (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-02-22)
      The 1918–20 pandemic influenza killed 50–100 million people worldwide, but mortality varied by ethnicity and geography. In Norway, areas dominated by Sámi experienced 3–5 times higher mortality than the country’s average. We here use data from burial registers and censuses to calculate all-cause excess mortality by age and wave in two remote Sámi areas of Norway 1918– 20. We hypothesise that geographic ...
    • Anvendelser av Norges historiske befolkningsregister 

      Thorvaldsen, Gunnar; Sommerseth, Hilde Leikny; Holden, Lars (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-10-14)
      Norge har et sentralt landsdekkende folkeregister som ble startet opp i 1964, og for mange personer inneholder data som går lenger tilbake. For tida bygger vi et Historisk befolkningsregister (HBR) tilbake til 1801. Målet er å konstruere en nasjonal database for også å håndtere innenlandsk migrasjon, som er dårlig dekket i de nominative kildene til langt ut på 1900-tallet. HBR bygger primært på ...
    • Befolkningsutvikling i Karasjok 1559-2001 

      Sommerseth, Hilde Leikny (Research report; Forskningsrapport, 2017)
      Innledning Finnmarkskommisjonen har bedt om en gjennomgang av befolkningsutviklingen, fortrinnsvis på krets/bygdenivå, i Karasjok. Utredningen gjennomgår befolkningsutviklingen i Karasjok fra 1559 til 2001. I løpet av disse nær 450 årene skjedde det en formidabel befolkningsvekst, fra 102 individer i 1559 til 2859 talte i 2001. Veksten kan forklares med fødselsoverskudd og innflytting. Sistnevnte ...
    • Born Dead or Alive? Revisiting the Definition of Stillbirths in Norway 

      Sommerseth, Hilde Leikny (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-03-31)
      Since 1947 there has been a common understanding among Norwegian historians and demographers that stillbirths registered in the country prior to 1839 included infants who were born alive but died within 24 hours. This paper shows that a revision of this definition is necessary. During the first half of the 19th century, several memoranda, revisions and circulars were distributed by the Danish-Norwegian ...
    • Comparing the sociodemographic characteristics of participants and non-participants in the population-based Tromsø Study 

      Vo, Chi Quynh; Samuelsen, Per-Jostein; Sommerseth, Hilde Leikny; Wisløff, Torbjørn; Wilsgaard, Tom; Eggen, Anne Elise (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-29)
      Background Diferences in the sociodemographic characteristics of participants and non-participants in populationbased studies may introduce bias and reduce the generalizability of research fndings. This study aimed to compare the sociodemographic characteristics of participants and non-participants of the seventh survey of the Tromsø Study (Tromsø7, 2015–16), a population-based health survey.<p> ...
    • The Gendering of Infectious Disease: Classifying Male and Female Causes of Death in the Netherlands and Norway, 1880–1910 

      Sommerseth, Hilde Leikny; Walhout, Evelien (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-08-25)
      This article explores sex and gender patterns in mortality, based on individual-level causes of death (CODs) in two urban communities, obtained from civil and parish registers. By analysing CODs for the period 1880–1910 for Roosendaal (Netherlands) and Trondheim (Norway) we investigate how notions of sex and gender were reflected in cause-specific mortality rates for adults and in the registration ...
    • Gorodskaia smertnost’v Norvegii vo vtoroi polovine XIX v.(po materialam prikhodskikh knig Tronheima) 

      Sommerseth, Hilde Leikny; Walhout, Evelien (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-06-29)
      Исследование посвящено детальному анализу смертности в Тронхейме — третьем по величине городе Норвегии во второй половине XIX в. На основе индивидуальных данных о причинах смерти, содержащихся в приходских книгах города Тронхейма, анализируются причины смерти и практики их регистрации, а также те изменения, которые проходили в условиях роста урбанизации и индустриализации. Изучив историю регистрации ...
    • ‘I will learn from it for as long as I live’ – religious reading and functional literacy skills 

      Moilanen, Mikko; Sommerseth, Hilde Leikny (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-08-02)
      Max Weber claims in his well-known book, The Protestant Ethic and the Spirit of Capitalism, that the emergence of capitalism had its roots in the Protestant work ethic. Becker and Woessmann’s seminal 2009 paper finds that the more likely relationship between Protestantism and economic prosperity runs via literacy. They claim that Protestants unintendedly acquired literacy skills that functioned as ...
    • The Impact of Microdata in Norwegian Historiography 1970 to 2020 

      Thorvaldsen, Gunnar; Sommerseth, Hilde Leikny (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-01)
      The establishment of the Norwegian Historical Data Centre, the 1801 project at the University of Bergen and the data transcriptions and scanned versions of the sources in the National Archives made Norwegian microdata much more available. A more detailed description of the digital techniques applied to the wealth of censuses, church records and other types of nominative data from the 18th century onwards, ...
    • The Intergenerational Transfer of Infant Mortality in Northern Norway during the 19th and Early 20th Centuries 

      Sommerseth, Hilde Leikny (Journal article; Tidsskriftartikkel; Peer reviewed, 2018)
      This paper is one of a series of five studying the intergenerational transfer of infant mortality down the maternal line. All five studies share the same theoretical and methodological design, and use data derived from a standard database format: the Intermediate Data Structure (IDS). The data for the research reported in this paper were derived from a longitudinal dataset covering the 19th and 20th ...
    • Introduction: Intergenerational Transmissions of Infant Mortality using the Intermediate Data Structure (IDS) 

      Quaranta, Luciana; Sommerseth, Hilde Leikny (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-12-20)
      It has previously been shown that infant mortality clusters in a subset of families, a phenomenon which was observed in historical populations as well as contemporary developing countries. A transmission of death clustering across generations has also been shown in Belgium, but it is unknown whether such effects are specific to the studied context or are also found in other areas. The current article ...
    • Lessons Learned Developing and Using a Machine Learning Model to Automatically Transcribe 2.3 Million Handwritten Occupation Codes 

      Pedersen, Bjørn-Richard; Holsbø, Einar; Andersen, Trygve; Shvetsov, Nikita; Ravn, Johan; Sommerseth, Hilde Leikny; Bongo, Lars Ailo (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-01-06)
      Machine learning approaches achieve high accuracy for text recognition and are therefore increasingly used for the transcription of handwritten historical sources. However, using machine learning in production requires a streamlined end-to-end pipeline that scales to the dataset size and a model that achieves high accuracy with few manual transcriptions. The correctness of the model results must ...
    • Old-age mortality and social class in northern Norway in the first half of the twentieth century 

      Langholz, Petja Lyn; Sommerseth, Hilde Leikny (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-09-13)
      The number of studies on social inequality in mortality in Norway before 1960 is limited and they often focus on early life outcomes. Little is known about socioeconomic differences in old-age mortality before the emergence of the welfare state. Linked census and church records from the Historical Population Register of Norway were used to study a sample of 10,457 men and women born 1841–1870 ...
    • Transgenerational Health Effects of In Utero Exposure to Economic Hardship: Evidence from Preindustrial Southern Norway 

      Sari, Emre; Moilanen, Mikko; Sommerseth, Hilde Leikny (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-12)
      We studied whether in utero exposure to economic hardship during a grandmother's pregnancy has a transgenerational effect on her grandchildren's health condition. We used an individual-level three-generation data set covering people born between 1734 and 1840 in the municipality of Rendalen in Norway. We found a culling effect in which grandchildren whose grandmothers gave birth in years of economic ...
    • Tuberkulosedød i Nord - En demografisk studie av tuberkulosen i Tromsø kjøpstad 1878 til 1920 

      Kovacevic, Marko; Sommerseth, Hilde Leikny (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-06-18)
      Denne artikkelen er en nærstudie av tuberkulosedødelighet i Tromsø by i en periode med sterk befolkningsvekst og tettere bosetting. Fra og med 1878 har vi tilgang på en tilnærmet fullstendig registrering av individuelle dødsårsaker i begravelsesprotokollene for Tromsø, og sammenstilt med folketellingene av 1875, 1885, 1900, 1910 og 1920 har vi rekonstruert Tromsøs befolkning etter kjønn og alder for ...
    • Validity of self-reported educational level in the Tromsø Study 

      Vo, Chi Quynh; Samuelsen, Per-Jostein; Sommerseth, Hilde Leikny; Wisløff, Torbjørn; Wilsgaard, Tom; Eggen, Anne Elise (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-05-20)
      Background: Self-reported data on educational level have been collected for decades in the Tromsø Study, but their validity has yet to be established. Aim: To investigate the completeness and correctness of self-reported educational level in the Tromsø Study, using data from Statistics Norway. In addition, we explored the consequence of using these two data sources on educational trends in ...
    • What was Killing Babies in Trondheim? An Investigation of Infant Mortality Using Individual Level Cause of Death Data, 1830–1907 

      Sommerseth, Hilde Leikny (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-03-02)
      This paper examines infant mortality amongst newborns in Trondheim city, 1830–1907, working specifically with individual level cause of death data. Findings show that infant mortality in the city started to drop from 1895, primarily as a result of a decline in post-neonatal mortality. At the start of the decline air-borne diseases accounted for nearly half of the deaths, and water-food borne for ...