Cecilie Dahl

• Kjeldgaard, Helena Kames; Meyer, Haakon Eduard; O’Flaherty, Martin; Apalset, Ellen Margrete; Dahl, Cecilie & Emaus, Nina [Show all 14 contributors for this article] (2022). Impact of total hip replacements on the incidence of hip fractures in Norway during 1999-2019. A NOREPOS study. Journal of Bone and Mineral Research. ISSN 0884-0431. doi: 10.1002/jbmr.4660. Show summary

  The knowledge about why hip fracture rates in Norway have declined is sparse. Concurrent with decreasing hip fracture rates, the rates of total hip replacements (THRs) have increased. We wanted to investigate if hip fracture rates continued to decline, and whether the increase in THRs had any influence on this decline, assuming that living with a hip prosthesis precludes fracture of the operated hip. Information on hip fractures in Norway 1999-2019 was available from the Norwegian Epidemiologic Osteoporosis Studies (NOREPOS) hip fracture database and population size were available in official population tables from Statistics Norway. Primary THRs (for any cause except hip fracture) 1989-2019 were obtained from the Norwegian Arthroplasty Register. We calculated the annual age-standardized incidence rates of hip fracture by sex for the period 1999–2019. The hip fracture rates in a scenario with no hip prostheses were calculated by subtracting 0.5 persons from the population at risk for each prevalent hip prosthesis, considering that each person has two hips at risk of fracture. We estimated how much of the decline could be attributed to the increased prevalence of hip prostheses. From 1999 to 2019, age-standardized incidence rates of hip fracture decreased by 27% in women and 20% in men. The rates remained stable in those under 70 years and decreased in those 70 years and above. Excluding replaced hips from the population at risk led to higher incidence rates, and this impact was considerably larger at higher ages. The increased prevalence of hip prostheses over the period accounted for approximately 18% (20% in women and 11% in men) of the observed decline in hip fracture rates. In conclusion, the incidence of hip fractures continued to decline, and the increasing number of people living with hip prostheses contributed significantly to the observed declining time trends.

• Dahl, Cecilie; Madsen, Christian; Omsland, Tone Kristin; Søgaard, Anne-Johanne; Tunheim, Ketil & Stigum, Hein [Show all 8 contributors for this article] (2022). The Association of Cold Ambient Temperature With Fracture Risk and Mortality: National Data From Norway - A Norwegian Epidemiologic Osteoporosis Studies (NOREPOS) Study. Journal of Bone and Mineral Research. ISSN 0884-0431. 37(8), p. 1527–1536. doi: 10.1002/jbmr.4628. Show summary

  Norway is an elongated country with large variations in climate and duration of winter season. It is also a high-risk country for osteoporotic fractures, in particular hip fractures, which cause high mortality. Although most hip fractures occur indoors, there is a higher incidence of both forearm and hip fractures during wintertime, compared with summertime. In a nationwide longitudinal cohort study, we investigated whether cold ambient (outdoor) temperatures could be an underlying cause of this high incidence and mortality. Hospitalized/outpatient forearm fractures (ICD-10 code S52) and hospitalized hip fractures (ICD-10 codes S72.0-S72.2) from 2008-2018 were retrieved from the Norwegian Patient Registry. Average monthly ambient temperatures (degrees Celsius, °C) from the years 2008-2018 were provided by the Norwegian Meteorological Institute and linked to the residential area of each inhabitant. Poisson models were fitted to estimate the association (Incidence Rate Ratios (IRR), 95% Confidence Intervals (CI)) between temperature and monthly incidence of total number of forearm and hip fractures. Flexible parametric survival models (Hazard ratios (HR), 95% CI) were used to estimate the association between temperature and post hip fracture mortality, taking the population mortality into account. Monthly temperature ranged from -20.2°C to 22.0°C, with a median of -2.0°C in winter and 14.4°C in summer. At low temperatures (

• Thapa, Rupa; Dahl, Cecilie; Aung, Wai Phyo & Bjertness, Espen (2021). Urban-rural differences in overweight and obesity among 25-64 years old Myanmar residents: A cross-sectional, nationwide survey. BMJ Open. ISSN 2044-6055. 11(3), p. 1–11. doi: 10.1136/bmjopen-2020-042561.
• Dahl, Cecilie; Holvik, Kristin; Meyer, Haakon E; Stigum, Hein; Solbakken, Siri Marie & Schei, Berit [Show all 8 contributors for this article] (2021). Increased mortality in hip fracture patients living alone: A NOREPOS study. Journal of Bone and Mineral Research. ISSN 0884-0431. 36(3), p. 480–488. doi: 10.1002/jbmr.4212. Full text in Research Archive
• Dahl, Cecilie; Madsen, Christian; Omsland, Tone Kristin; Søgaard, Anne-Johanne; Tell, Grethe S. & Holvik, Kristin [Show all 7 contributors for this article] (2020). Contribution of elevation and residential proximity to the coast in explaining geographic variations in hip fracture incidence. A Norwegian Epidemiologic Osteoporosis Studies (NOREPOS) study. Osteoporosis International. ISSN 0937-941X. p. 1–6. doi: 10.1007/s00198-020-05736-y.
• Forsén, Lisa; Søgaard, Anne-Johanne; Holvik, Kristin; Meyer, Haakon E; Omsland, T.K. & Stigum, Hein [Show all 7 contributors for this article] (2020). Geographic variations in hip fracture incidence in a high-risk country stretching into the Arctic: a NOREPOS study. Osteoporosis International. ISSN 0937-941X. 31, p. 1323–1331. doi: 10.1007/s00198-020-05346-8. Full text in Research Archive
• Solbakken, Siri Marie; Magnus, Jeanette H.; Meyer, Haakon E; Dahl, Cecilie; Stigum, Hein & Søgaard, Anne-Johanne [Show all 14 contributors for this article] (2019). Urban–Rural Differences in Hip Fracture Mortality: A Nationwide NOREPOS Study. JBMR Plus. ISSN 2473-4039. 3(11). doi: 10.1002/jbm4.10236. Full text in Research Archive
• Borgen, Tove Tveitan; Bjørnerem, Åshild; Solberg, Lene Bergendal; Andreasen, Camilla; Brunborg, Cathrine & Stenbro, May-Britt [Show all 18 contributors for this article] (2019). Determinants of trabecular bone score and prevalent vertebral fractures in women with fragility fractures: a cross-sectional sub-study of NoFRACT. Osteoporosis International. ISSN 0937-941X. 31, p. 505–514. doi: 10.1007/s00198-019-05215-z. Full text in Research Archive
• Borgen, Tove Tveitan; Bjørnerem, Åshild; Solberg, Lene Bergendal; Andreasen, Camilla; Brunborg, Cathrine & Stenbro, May-Britt [Show all 20 contributors for this article] (2019). High prevalence of vertebral fractures and low trabecular bone score in patients with fragility fractures: A cross-sectional sub-study of NoFRACT. Bone. ISSN 8756-3282. 122, p. 14–21. doi: 10.1016/j.bone.2019.02.008. Full text in Research Archive
• Iszatt, Nina; Janssen, Stefan; Lenters, Virissa Claire; Dahl, Cecilie; Stigum, Hein & Knight, Rob [Show all 11 contributors for this article] (2019). Environmental toxicants in breast milk of Norwegian mothers and gut bacteria composition and metabolites in their infants at 1 month. Microbiome. ISSN 2049-2618. 7(34). doi: 10.1186/s40168-019-0645-2. Full text in Research Archive
• Andreasen, Camilla; Solberg, Lene Bergendal; Basso, Trude; Borgen, Tove Tveitan; Dahl, Cecilie & Wisløff, Torbjørn [Show all 20 contributors for this article] (2018). Effect of a Fracture Liaison Service on the Rate of Subsequent Fracture Among Patients With a Fragility Fracture in the Norwegian Capture the Fracture Initiative (NoFRACT): A Trial Protocol. JAMA Network Open. ISSN 2574-3805. 1(8). doi: 10.1001/jamanetworkopen.2018.5701. Full text in Research Archive
• Stanislawski, Maggie A.; Dabelea, Dana; Wagner, Brandie D.; Iszatt, Nina; Dahl, Cecilie & Sontag, Marci K. [Show all 9 contributors for this article] (2018). Gut Microbiota in the First 2 Years of Life and the Association with Body Mass Index at Age 12 in a Norwegian Birth Cohort. mBio. ISSN 2161-2129. 9(5). doi: 10.1128/mBio.01751-18. Full text in Research Archive
• Gay, Melvin C. L.; Koleva, Petya T.; Slupsky, Carolyn M.; du Toit, Eloise; Eggesbø, Merete Åse & Johnson, Christine C. [Show all 14 contributors for this article] (2018). Worldwide Variation in Human Milk Metabolome:Indicators of Breast Physiology and Maternal Lifestyle? . Nutrients. ISSN 2072-6643. 10(9). doi: 10.3390/nu10091151. Full text in Research Archive
• Chen, Sairah Lai Fa; Dahl, Cecilie; Meyer, Haakon E & Madar, Ahmed Ali (2018). Estimation of Salt Intake Assessed by 24-Hour Urinary Sodium Excretion among Somali Adults in Oslo, Norway. Nutrients. ISSN 2072-6643. 10(7). doi: 10.3390/nu10070900. Full text in Research Archive
• Dahl, Cecilie; Stigum, Hein; Valeur, Jørgen; Iszatt, Nina; Lenters, Virissa Claire & Peddada, Shyamal [Show all 10 contributors for this article] (2018). Preterm infants have distinct microbiomes not explained by mode of delivery, breastfeeding duration or antibiotic exposure. International Journal of Epidemiology. ISSN 0300-5771. 47(5), p. 1658–1669. doi: 10.1093/ije/dyy064. Full text in Research Archive
• Dahl, Cecilie; Stanislawski, Maggie ; Iszatt, Nina; Mandal, Siddhartha; Lozupone, Catherine & Clemente, José C [Show all 9 contributors for this article] (2017). Gut microbiome of mothers delivering prematurely shows reduced diversity and lower relative abundance of Bifidobacterium and Streptococcus. PLOS ONE. ISSN 1932-6203. 12(10). doi: 10.1371/journal.pone.0184336. Full text in Research Archive
• Søgaard, Anne-Johanne; Holvik, Kristin; Omsland, Tone Kristin; Tell, Grethe Seppola; Dahl, Cecilie & Schei, Berit [Show all 7 contributors for this article] (2016). Age and Sex Differences in Body Mass Index as a Predictor of Hip Fracture: A NOREPOS Study. American Journal of Epidemiology. ISSN 0002-9262. 184(7), p. 510–519. doi: 10.1093/aje/kww011.
• Aamodt, Geir & Dahl, Cecilie (2016). Magnesium i drikkevannet – Kan rørhelse og folkehelse bli ett? Vann. ISSN 0042-2592. 51(1), p. 22–29. Full text in Research Archive
• Dahl, Cecilie; Søgaard, Anne-Johanne; Tell, Grethe Seppola; Forsen, Lisa; Flaten, Trond Peder & Hongve, Dag [Show all 10 contributors for this article] (2015). Population data on calcium in drinking water and hip fracture: An association may depend on other minerals in water. A NOREPOS study. Bone. ISSN 8756-3282. 81, p. 292–299. doi: 10.1016/j.bone.2015.07.020.
• Søgaard, Anne-Johanne; Holvik, Kristin; Omsland, Tone Kristin; Tell, Grethe S; Dahl, Cecilie & Schei, Berit [Show all 9 contributors for this article] (2015). Abdominal obesity increases the risk of hip fracture. A population-based study of 43 000 women and men aged 60-79 years followed for 8 years. Cohort of Norway. Journal of Internal Medicine. ISSN 0954-6820. 277(3), p. 306–317. doi: 10.1111/joim.12230. Full text in Research Archive
• Dahl, Cecilie; Søgaard, Anne-Johanne; Tell, Grethe S; Flaten, Trond Peder; Hongve, Dag & Omsland, Tone Kristin [Show all 9 contributors for this article] (2014). Do cadmium, lead, and aluminum in drinking water increase the risk of hip fractures? A NOREPOS study. Biological Trace Element Research. ISSN 0163-4984. 157(1), p. 14–23. doi: 10.1007/s12011-013-9862-x.
• Dahl, Cecilie; Søgaard, Anne Johanne; Tell, Grethe S; Flaten, Trond Peder; Krogh, Truls & Aamodt, Geir (2013). Is the quality of drinking water a risk factor for self-reported forearm fractures? Cohort of Norway. Osteoporosis International. ISSN 0937-941X. 24(2), p. 541–551. doi: 10.1007/s00198-012-1989-7.
• Dahl, Cecilie; Søgaard, Anne-Johanne; Tell, Grethe S; Flaten, Trond Peder; Hongve, Dag & Omsland, Tone Kristin [Show all 9 contributors for this article] (2013). Nationwide data on municipal drinking water and hip fracture: Could calcium and magnesium be protective? A NOREPOS study. Bone. ISSN 8756-3282. 57(1), p. 84–91. doi: 10.1016/j.bone.2013.06.017.

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• Eick, Frode; Vallersnes, Odd Martin; Fjeld, Heidi; Sørbye, Ingvil Krarup; Storkås, Guro & Ekrem, Marthe [Show all 11 contributors for this article] (2022). Use of non-governmental maternity services and pregnancy outcomes among undocumented women: a cohort study from Norway. Show summary

  In 2011, Norway granted pregnant undocumented women the right to antenatal care and to give birth at a hospital, but did not include them in the general practitioner and reimbursement schemes. In addition, Non-Governmental Organizations (NGO) have been running health clinics for undocumented migrants. There is a need to investigate how pregnant undocumented women use NGO clinics and how this affects their maternal health. We therefore investigated the care received, occurrence of pregnancy-related complications and maternal and perinatal outcomes in women receiving care at these clinics. In this historic cohort study we included pregnant women aged 18-49 who attended urban NGO clinics between 2009-2020 and retrieved their medical records from the hospitals in the uptake area. We compared women based on region of origin using log-binominal regression to estimate relative risk of adverse outcomes. We identified 582 pregnancies in 500 women during the study period. About half (46.5%) the women sought antenatal care after the first trimester. The women had median 1 (IQR 1-3) antenatal visit at the NGO clinics which referred 77.7% of the women to public health care. In 205 retrieved deliveries, there was a 45.9% risk for any adverse outcome. The overall risk of stillbirth was 1.0%, pre-term birth 10.3%, and emergency caesarean section 19.3%. Pregnant undocumented women who use NGO clinics receive substandard antenatal care and have a high risk of adverse maternal and perinatal outcomes. This study suggests that increased attention should be given to ensure the accessibility of adequate antenatal care to undocumented women.

• Eick, Frode; Vallersnes, Odd Martin; Sørbye, Ingvil Krarup; Ebbing, Cathrine; Storkås, Guro & Ekrem, Marthe [Show all 11 contributors for this article] (2022). Pregnant undocumented women’s use of two humanitarian clinics between 2009-2020 and their maternal outcomes in Norway: A cohort study.
• Søgaard, Anne-Johanne; Holvik, Kristin; Dahl, Cecilie; Meyer, Haakon Eduard & Omsland, Tone Kristin (2021). Osteoporose – den glemte folkesykdom. Michael. ISSN 1893-9651. 18(28), p. 119–133. Show summary

  Osteoporose innebærer at benvevet blir mer porøst og kan brekke ved lav belastning. Svekkelsen i benstrukturen gir ingen symptomer før man får et brudd. Det er usikkert hvor mange som har osteoporose i Norge, men antallet er beregnet å være nærmere 300 000 personer. Ofte benyttes osteoporotiske brudd i hofte, underarm og ryggrad som mål på forekomst av osteoporose som klinisk problem. Hoftebrudd har ofte størst konsekvenser for enkeltindivid og samfunn. Det skjer et hoftebrudd hver time på døgnet i Norge, totalt ca. 9 000 per år. Kvinner og eldre er mest utsatt. Norge ligger på verdenstoppen i hoftebrudd, og vi har begrenset kunnskap om årsakene til dette. Et hoftebrudd koster nesten 1 million kroner det første året. Selv om hyppigheten har gått ned siden begynnelsen av 1990-årene, vil antall hoftebrudd likevel øke fremover pga. økende antall eldre. Osteoporose og fall er de viktigste risikofaktorene, og røyking, lav vekt, lite fysisk aktivitet og tidligere brudd, virker inn på disse. Vi omtaler her et pågående prosjekt i Oslo som følger opp fallskader for å hindre nye fall, og et omfattende prosjekt ved syv sykehus som skal forebygge nye brudd hos bruddpasienter. Vi spør også hvorfor det tilsynelatende satses så lite på å forebygge denne folkesykdommen.

• Dahl, Cecilie; Madsen, Christian; Omsland, Tone Kristin; Søgaard, Anne-Johanne; Holvik, Kristin & Meyer, Haakon E (2021). Cold – a risk factor for osteoporotic fractures and fracture related mortality. Norsk Epidemiologi, Supplement. ISSN 0803-4206. 29(1), p. 30–30.
• Dahl, Cecilie (2021). Hvorfor har vi mer benskjørhet i Norge enn i andre land? Medisinbloggen.
• Dahl, Cecilie; Holvik, Kristin; Meyer, Haakon Eduard; Stigum, Hein; Solbakken, Siri Marie & Schei, Berit [Show all 8 contributors for this article] (2021). Re: “Hip Fracture and Mortality: A Loss of Life Expectancy Interpretation” by Thao T Ho-Le and Tuan V Nguyen. Journal of Bone and Mineral Research. ISSN 0884-0431. doi: 10.1002/jbmr.4383.
• Meyer, Haakon E; Dahl, Cecilie; Kjeldgaard, Helena Kames; Schei, Berit; Søgaard, Anne-Johanne & Tell, Grethe Seppola [Show all 7 contributors for this article] (2020). Body height and the risk of hip fracture in Women. Therapeutic Advances in Musculoskeletal Disease (TAMD). ISSN 1759-720X. 12, p. 54–54. doi: 10.1177/1759720X20969289.
• Borgen, Tove Tveitan; Bjørnerem, Åshild; Solberg, Lene Bergendal; Andreasen, Camilla; Brunborg, Cathrine & Hübschle, Lars Michael [Show all 17 contributors for this article] (2019). Determinants of Trabecular Bone Score and Vertebral Fracture Status in Women With Fragility Fractures: A Cross-sectional Sub-study of NoFRACT .
• Stanislawski, Maggie A.; Dabelea, Dana; Wagner, Brandie D.; Iszatt, Nina; Dahl, Cecilie & Sontag, Marci K. [Show all 9 contributors for this article] (2019). Reply to Moossavi and Azad, "Quantifying and Interpreting the Association between Early-Life Gut Microbiota Composition and Childhood Obesity". mBio. ISSN 2161-2129. 10(1). doi: 10.1128/mBio.00047-19.
• Andreasen, Camilla; G. Rogli, Veronica; Elvenes, Jan; Joakimsen, Ragnar Martin; Borgen, Tove Tveitan & Solberg, Lene Bergendal [Show all 13 contributors for this article] (2018). Tromsoporosis - Secondary Fracture Prevention Program resulted in improved adherence to anti-osteoporotic drugs in Tromsø, Norway.
• Andreasen, Camilla; G. Rogli, Veronica; Elvenes, Jan; Joakimsen, Ragnar Martin; Borgen, Tove Tveitan & Solberg, Lene Bergendal [Show all 13 contributors for this article] (2018). Tromsoporosis - Secondary Fracture Prevention Program resulted in high adherence to anti-osteoporotic drugs in Tromsø, Norway.
• Andreasen, Camilla; G. Rogli, Veronica; Elvenes, Jan; Joakimsen, Ragnar Martin; Borgen, Tove Tveitan & Solberg, Lene Bergendal [Show all 13 contributors for this article] (2018). Tromsoporosis - Secondary Fracture Prevention Program resulted in high adherence to anti-osteoporotic drugs in Tromsø, Norway.
• Andreasen, Camilla; Osima, Marit; Rognli, Veronica; Grundel, Dag; Elvenes, Jan & Knutsen, Gunnar [Show all 17 contributors for this article] (2017). Tromsoporosis - Adherence to a Secondary Fracture Prevention Program in Tromsø, Norway.
• Søgaard, Anne-Johanne; Omsland, Tone Kristin; Holvik, Kristin; Tell, Grethe S.; Dahl, Cecilie & Schei, Berit [Show all 7 contributors for this article] (2017). The Authors Reply. American Journal of Epidemiology. ISSN 0002-9262. 185(6), p. 511–513. doi: 10.1093/aje/kwx028.
• Dahl, Cecilie; Stigum, Hein; Valeur, Jørgen; Iszatt, Nina; Lenters, Virissa & Mandal, Siddhartha [Show all 9 contributors for this article] (2016). Preterm infants have distinct microbiomes, not explained by mode of delivery, less breastfeeding, or antibiotic exposure.
• Dahl, Cecilie; Søgaard, Anne Johanne; Tell, Grethe Seppola; Flaten, Trond Peder; Hongve, Dag & Omsland, Tone Kristin [Show all 9 contributors for this article] (2014). Is copper in drinking water related to risk of hip fracture? And could a possible protective associationbetween calcium and hip fracture be modified by copper? Norsk Epidemiologi. ISSN 0803-2491. 24, p. 48–48.
• Dahl, Cecilie; Søgaard, Anne Johanne; Tell, Grethe S; Flaten, Trond Peder; Hongve, Dag & Omsland, Tone Kristin [Show all 10 contributors for this article] (2013). Do cadmium and lead in drinking water increase the risk of hip fracture? A NOREPOS study.
• Dahl, Cecilie; Søgaard, Anne-Johanne; Tell, Grethe S & Aamodt, Geir (2012). Do heavy metals in municipal drinking water increase the risk of hip fractures? The Norwegian epidemiologic ostoporosis study (NOREPOS). Osteoporosis International. ISSN 0937-941X. 23, p. S554–S554.
• Dahl, Cecilie; Søgaard, Anne-Johanne; Tell, Grethe S; Flaten, Trond Peder; Hongve, Dag & Omsland, Tone Kristin [Show all 9 contributors for this article] (2012). Do toxic metals in municipal drinking water increase the risk of hip fractures? The NOREPOS study.
• Dahl, Cecilie; Søgaard, Anne Johanne; Tell, Grethe S; Flaten, Trond Peder; Krogh, Truls & Aamodt, Geir (2011). Is the quality of drinking water a risk factor for forearm fractures? Norsk Epidemiologi. ISSN 0803-2491. 21, p. 34–34.
• Dahl, Cecilie; Søgaard, Anne Johanne; Tell, Grethe S; Krogh, Truls & Aamodt, Geir (2010). pH variation in Norwegian drinking water and the effect on bone health. The NOREPOS Study. Norsk Epidemiologi. ISSN 0803-2491. 20, p. 40–40.
• Dahl, Cecilie (2014). Quality of municipal drinking water and the risk of osteoporotic fractures in Norway. University of Bergen. ISSN 978-82-308-2895-3.

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