Anders Hammerich Riis

  1. Published

    Perforated peptic ulcer: use of pre-admission oral glucocorticoids and 30-day mortality. / Christensen, Steffen; Riis, Anders; Nørgaard, M.; Thomsen, Reimar W.; Tønnesen, Else Kirstine; Larsson, A.; Sørensen, Henrik Toft.

    In: Alimentary Pharmacology and Therapeutics, Vol. 23, 2006, p. 45-52.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  2. Published

    Perforated peptic ulcer:  use of preadmission oral glucocorticoids and 30-day mortality. / Christensen, Steffen; Riis, Anders; Nørgaard, Mette; Tønnesen, Else Kirstine; A, Larsson; Sørensen, Henrik Toft; Thomsen, Reimar W.

    2005. Poster session presented at Dansk Anæstesiologisk Selskab, Århus, Denmark.

    Research output: Contribution to conferencePosterResearch

  3. Published

    Pneumococcal serotypes and mortality following invasive pneumococcal disease: a population-based cohort study. / Harboe, Zitta B; Thomsen, Reimar W; Riis, Anders; Valentiner-Branth, Palle; Christensen, Jens Jørgen; Lambertsen, Lotte; Krogfelt, Karen A; Konradsen, Helle B; Benfield, Thomas L.

    In: P L o S Medicine, Vol. 6, No. 5, 2009, p. e1000081.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  4. Published

    Population-based study of short- and long-term survival from colorectal cancer in Denmark, 1977-1999. / Iversen, Lene H.; Pedersen, Lars; Riis, Anders; Friis, S; Laurberg, Søren; Sørensen, Henrik Toft.

    In: British Journal of Surgery, Vol. 92, 2005, p. 873-80.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  5. Published

    Pre-admission use of glucocorticoids and 30-day mortality following colorectal cancer surgery : a population-based Danish cohort study. / Ostenfeld, E B; Erichsen, R; Thorlacius-Ussing, O; Riis, A H; Sørensen, H T.

    In: Alimentary Pharmacology and Therapeutics, Vol. 39, No. 8, 04.2014, p. 843-53.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  6. Published

    Pre-gravid oral contraceptive use and time to pregnancy : a Danish prospective cohort study. / Mikkelsen, Ellen M; Riis, Anders H; Wise, Lauren A; Hatch, Elizabeth E; Rothman, Kenneth J; Sørensen, Henrik Toft.

    In: Human reproduction (Oxford, England), Vol. 28, No. 5, 05.2013, p. 1398-405.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  7. Published

    Pre-gravid oral contraceptive use in relation to birth weight : a prospective cohort study. / Hatch, Elizabeth E; Hahn, Kristen A; Mikkelsen, Ellen M; Riis, Anders H; Sorensen, Henrik Toft; Rothman, Kenneth J; Wise, Lauren A.

    In: European Journal of Epidemiology, Vol. 30, No. 11, 11.2015, p. 1199-208.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  8. Published

    Preadmission glucocorticoid use and anastomotic leakage after colon and rectal cancer resections : a Danish cohort study. / Ostenfeld, Eva Bjerre; Erichsen, Rune; Baron, John A; Thorlacius-Ussing, Ole; Iversen, Lene Hjerrild; Riis, Anders H; Sørensen, Henrik Toft; Danish Colorectal Cancer Group.

    In: BMJ Open, Vol. 5, No. 9, 2015, p. e008045.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  9. Published

    Preadmission use of SSRIs alone or in combination with NSAIDs and 30-day mortality after peptic ulcer bleeding. / Gasse, Christiane; Christensen, Steffen; Riis, Anders; Mortensen, Preben B; Adamsen, Sven; Thomsen, Reimar W.

    In: Scandinavian Journal of Gastroenterology, Vol. 44, No. 11, 2009, p. 1288-95.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  10. Published

    Preadmission use of antipsychotic drugs was associated with increased short-term mortality after peptic ulcer perforation. / Christiansen, Christian; Christensen, Steffen; Riis, Anders; Thomsen, Reimar Niels Wernich; Tønnesen, Else Kirstine; Sørensen, Henrik Toft.

    2008. Poster session presented at 23rd international Conference for Pharmacoepidemiology and therapeutic risk Management (ICPE), Quebec, Canada.

    Research output: Contribution to conferencePosterResearch

  11. Published

    Preadmission use of statins and mortality within 90 days after hospitalization with pneumonia: population-based cohort study of 29,900 adult patients. / Thomsen, Reimar Niels Wernich; Riis, Anders; Kornum, Jette Brommann; Christensen, Steffen; Johnsen, Søren Paaske; Sørensen, Henrik Toft.

    2008. Poster session presented at 17th European Congress of Clinical Microbiology and Infectious Diseases (ECCMID), München, Germany.

    Research output: Contribution to conferencePosterResearch

  12. Published

    Preadmission use of statins and outcomes after hospitalization with pneumonia: population-based cohort study of 29,900 patients. / Thomsen, Reimar W; Riis, Anders; Kornum, Jette B; Christensen, Steffen; Johnsen, Søren P; Sørensen, Henrik T.

    In: Archives of Internal Medicine, Vol. 168, No. 19, 2008, p. 2081-7.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  13. Published

    Preadmission use of systemic glucocorticoids and 30-day mortality following bleeding peptic ulcer - A population-based cohort study. / Olsen, Morten Smærup; Christensen, Steffen; Riis, A.; Thomsen, Reimar Niels Wernich; Sørensen, Henrik Toft.

    In: Pharmacoepidemiology and Drug Safety, No. s1, 2008, p. 489.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperConference abstract in journalResearch

  14. Published

    Preadmission use of systemic glucocorticoids and 30-day mortality following bleeding peptic ulcer: a population-based cohort study. / Olsen, Morten; Christensen, Steffen; Riis, Anders; Thomsen, Reimar W.

    In: American Journal of Therapeutics, Vol. 17, No. 1, 2010, p. 23-9.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  15. Published

    Predictors and patterns of red blood cell transfusion use among newly diagnosed cancer patients with chemotherapy-associated anemia in Western Denmark (1998-2003). / Yong, Mellissa; Riis, Anders H; Fryzek, Jon P; Møller, Bjarne K; Johnsen, Søren P.

    In: Clinical Epidemiology, Vol. 3, 01.01.2011, p. 91-9.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  16. Published

    Predictors of preconceptional folic acid or multivitamin supplement use : a cross-sectional study of Danish pregnancy planners. / Cueto, Heidi T; Riis, Anders H; Hatch, Elizabeth E; Wise, Lauren A; Rothman, Kenneth J; Mikkelsen, Ellen M.

    In: Clinical Epidemiology, Vol. 4, 2012, p. 259-65.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  17. Published

    Prognostic impact of haematological and non-haematological malignancies on mortality of hospitalized pneumonia - a Danish population-based cohort study. / Nørgaard, Mette; Riis, Anders; Thomsen, Reimar W.; Schønheyder, H.C.; Sørensen, Henrik Toft.

    2006. Poster session presented at 16th European Congress of Clinical Microbiology and Infectious Diseases (ECCMID), Nice, France.

    Research output: Contribution to conferencePosterResearch

  18. Published

    Prospective study of time to pregnancy and adverse birth outcomes. / Wise, Lauren A; Mikkelsen, Ellen M; Sørensen, Henrik Toft; Rothman, Kenneth J; Hahn, Kristen A; Riis, Anders H; Hatch, Elizabeth E.

    In: Fertility and Sterility, Vol. 103, No. 4, 04.2015, p. 1065-1073.e2.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  19. Published

    Randomized trial of questionnaire length. / Rothman, Kenneth J; Mikkelsen, Ellen M; Riis, Anders; Sørensen, Henrik T; Wise, Lauren A; Hatch, Elizabeth E.

    In: Epidemiology, Vol. 20, No. 1, 2009, p. 154.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperLetterResearch

  20. Published

    Randomized trial of the effect of questionnaire length on enrollment and missing data in a web-based cohort study in Denmark. / Rothman, K J; Mikkelsen, Ellen Margrethe; Sørensen, Henrik Toft; Hatch, E; Riis, Anders; Wise, L A.

    2009. Poster session presented at ICN 24th Quadrennial Congress, Durban, South Africa.

    Research output: Contribution to conferencePosterResearch

  21. Published

    Registration of acute medical hospital admissions in the Danish National Patient Registry : a validation study. / Hansen, Betina; Riis, Anders Hammerich; Christiansen, Christian Fynbo.

    In: Clinical Epidemiology, Vol. 5, 2013, p. 129-33.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  22. Published
  23. Published

    Rising incidence and persistently high mortality of hospitalized pneumonia: 10-year population-based study in Denmark. / Thomsen, Reimar W.; Riis, Anders; Nørgaard, Mette; Jacobsen, Jacob; Christensen, Steffen; McDonald, CJ; Sørensen, Henrik Toft.

    In: Journal of Internal Medicine, Vol. 259, 2006, p. 410-7.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  24. Published

    Rising incidence and persistently high mortality of hospitalized pneumonia: A 10-year population-based study in Denmark. / Thomsen, Reimar W.; Riis, Anders; Nørgaard, Mette; Jacobsen, Jacob; Christensen, Steffen; McDonald, CJ; Sørensen, Henrik Toft.

    2006. Poster session presented at 16th European Congress of Clinical Microbiology and Infectious Diseases (ECCMID), Nice, France.

    Research output: Contribution to conferencePosterResearch

  25. Published

    Risk factors for revision due to infection after primary total hip arthroplasty. A population-based study of 80,756 primary procedures in the Danish Hip Arthroplasty Registry. / Pedersen, Alma B; Svendsson, Jens E; Johnsen, Søren P; Riis, Anders; Overgaard, Søren.

    In: Acta Orthopaedica (Print Edition), Vol. 81, No. 5, 2010, p. 542-7.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review