• Incidence of obstetric anal sphincter injuries after training to protect the perineum: cohort study 

      Laine, Katariina; Skjeldestad, Finn Egil; Sandvik, Leiv; Staff, Anne Cathrine (Journal article; Tidsskriftartikkel; Peer reviewed, 2012)
      Objective To compare the incidence of obstetric anal sphincter injuries (OASIS) in two time periods, before and after implementing a training programme for improved perineal support aimed at reducing the incidence of obstetric anal sphincter injuries. The secondary aim was to study incidence of obstetric anal sphincter injuries in subgroups defined by risk factors for OASIS. Design Population-based ...
    • The increased risk of venous thromboembolism by advancing age cannot be attributed to the higher incidence of cancer in the elderly: the Tromsø study 

      Blix, Kristine; Brækkan, Sigrid Kufaas; Le Cessie, S.; Skjeldestad, Finn Egil; Cannegieter, Suzanne C.; Hansen, John-Bjarne (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
    • Maternal age and risk of cesarean section in women with induced labor at term—A Nordic register‐based study 

      Bergholt, Thomas; Skjeldestad, Finn Egil; Pyykönen, Aura; Rasmussen, Steen C.; Tapper, Anna-Maija; Bjarnadóttir, Ragnheiður I.; Smárason, Alexander; Másdóttir, Birna B.; Klungsøyr, Kari; Albrechtsen, Susanne; Källén, Karin; Gissler, Mika; Løkkegaard, Ellen (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-10-04)
      <p><i>Introduction - </i>Over the last decades, induction of labor has increased in many countries along with increasing maternal age. We assessed the effects of maternal age and labor induction on cesarean section at term among nulliparous and multiparous women without previous cesarean section. <p><i>Material and methods - </i>We performed a retrospective national registry‐based study from Denmark, ...
    • May Women with a Negative Co-Test at First Follow-Up Visit Return to 3-Year Screening after Treatment for Cervical Intraepithelial Neoplasia? 

      Skjeldestad, Finn Egil; Sørbye, Sveinung (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-03-08)
      Background: The Norwegian Cervical Cancer Screening Programme recommends that women treated for cervical intraepithelial neoplasia (CIN) only be returned to 3-year screening after receiving two consecutive negative co-tests, 6 months apart. Here we evaluate adherence to these guidelines and assessed the residual disease, using CIN3+ as the outcome. Methods: This cross-sectional study comprised ...
    • Minor changes in the incidence of primary and secondary involuntary childlessness across birth cohorts 1916 to 1975, but major differences in treatment success 

      Skjeldestad, Finn Egil (Journal article; Tidsskriftartikkel, 2023-07-12)
      There have been tremendous advances in assisted reproductive technologies (ARTs) over the past 50 years. The present study assessed infertility outcomes among women of reproductive age during this period. The seventh survey of the Tromsø Study (Tromsø7, 2015–16) recruited Tromsø residents aged 40–98 years. The questionnaire collected information on sociodemographics and infertility, as well as data ...
    • Prevalence and Risk Indicators for Anal Incontinence among Pregnant Women 

      Staff, Anne Cathrine; Laine, Katariina; Skjeldestad, Finn Egil; Sandvik, Leiv (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
      The aim of this study was to assess the prevalence and risk factors of anal incontinence in an unselected pregnant population at second trimester. A survey of pregnant women attending a routine ultrasound examination was conducted in a university hospital in Oslo, Norway. A questionnaire consisting of 105 items concerning anal incontinence (including St. Mark’s score), urinary incontinence, ...
    • Primary cervical cancer screening with an HPV mRNA test: a prospective cohort study 

      Sørbye, Sveinung Wergeland; Fismen, Silje; Gutteberg, Tore Jarl; Mortensen, Elin Synnøve; Skjeldestad, Finn Egil (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-08-11)
      <b>Objectives</b> To assess the performance of a 5-type human papillomavirus (HPV) messenger RNA (mRNA) test in primary screening within the framework of the Norwegian population-based screening programme. <br> <b>Design</b> Nationwide register-based cohort study. <br> <b>Setting</b> In 2003–2004, general practitioners and gynaecologists recruited 18 852 women for participation in a primary ...
    • Quality control of cervical cytology using a 3-type HPV mRNA test increases screening program sensitivity of cervical intraepithelial neoplasia grade 2+ in young Norwegian women-A cohort study 

      Westre, Bjørn; Giske, Anita; Guttormsen, Hilde; Sørbye, Sveinung; Skjeldestad, Finn Egil (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-11-05)
      Within 2021, Norway intends to complete implementation of HPV DNA-based primary screening for cervical cancer for women 34–69 years, while continue cytology-based screening for women 25–33 years. Over the recent years, the incidence of cervical cancer has increased by 30% among women younger than 40 years. In this subset of women, nearly 30% were diagnosed with a normal smear, as most recent smear, ...
    • The quality of denominator data in surgical site infection surveillance versus administrative data in Norway 2005-2010 

      Løwer, Hege Line Magnussen; Eriksen, Hanne-Merete; Aavitsland, Preben; Skjeldestad, Finn Egil (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-11-30)
      Background: High quality of surveillance systems for surgical site infections (SSIs) is the key to their usefulness. The Norwegian Surveillance System for Antibiotic Consumption and Healthcare-Associated Infections (NOIS) was introduced by regulation in 2005, and is based largely on automated extraction of data from underlying systems in the hospitals. <p>Methods: This study investigates the ...
    • Recurrent disease after treatment for cervical intraepithelial neoplasia-The importance of a flawless definition of residual disease and length of follow-up 

      Bjørnerem, Mathilde Seeger; Sørbye, Sveinung; Skjeldestad, Finn Egil (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-03-09)
      Objective - To evaluate adherence to national guidelines for follow-up, and assess residual and recurrent disease after treatment for cervical intraepithelial neoplasia grade 2 or worse (CIN2+).<p> <p>Study design - In a case-series design women aged 25–69 years treated for primary CIN2+ in 2006–2011 (n = 752) were followed through August 9, 2019 for residual or recurrent disease, i.e., CIN2+ ...
    • Reproductive changes among women in their 40s: A cross-sectional study 

      Lindh, Ingela; Skjeldestad, Finn Egil; Heikinheimo, Oskari; Hognert, Helena; Lidegaard, Øjvind; Bergh, Christina; Gemzell-Danielsson, Kristina (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-01-05)
      Introduction The aim was to describe and compare changes in the reproductive pattern of women in their 40s observed over a decade in Scandinavia. Material and Methods Cross-sectional study using the total population of women aged 40–49 years between 2008–2018 in Denmark, Norway and Sweden (on average n = 1.5 million). Aggregated data concerning birth and induced abortion rate were collected and ...
    • The retropubic tension-free vaginal tape procedure—Efficacy, risk factors for recurrence and long-term safety 

      Holdø, Bjørn; Verelst, Margareta; Svenningsen, Rune; Milsom, Ian; Skjeldestad, Finn Egil (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-02-14)
      <i>Introduction</i> - The retropubic tension‐free vaginal tape has been the preferred method for primary surgical treatment of stress urinary incontinence and stress‐dominated mixed urinary incontinence in women for more than 20 years. This study presents long‐term safety and efficacy data and assesses risk factors for long‐term recurrence.<p> <p><i>Material and methods</i> - In a case‐series ...
    • A retrospective comparison of ultrasound-assisted catheter-directed thrombolysis and catheter-directed thrombolysis alone for treatment of proximal deep vein thrombosis 

      Tichelaar, Ynse Ieuwe Gerardus Vladimir; Brodin, Ellen Elisabeth; Vik, Anders; Isaksen, Trond; Skjeldestad, Finn Egil; Kumar, Satish; Trasti, Nora; Singh, Kulbir; Hansen, John-Bjarne (Journal article; Tidsskriftartikkel; Peer reviewed, 2016)
      Background: Recent studies have suggested that catheterdirected thrombolysis (CDT) reduces development of postthrombotic syndrome (PTS). Ultrasound-assisted CDT (USCDT) might enhance the efficiency of thrombolysis. We aimed to compare USCDT with CDT on efficacy, safety, development of PTS, and quality of life after longterm follow-up. <p>Methods: We describe a retrospective case series of 94 ...
    • Risk of Intraepithelial Neoplasia Grade 3 or Worse (CIN3+) among Women Examined by a 5-Type HPV mRNA Test during 2003 and 2004, Followed through 2015 

      Rad, Amir; Sørbye, Sveinung; Tiwari, Sweta; Løchen, Maja-Lisa; Skjeldestad, Finn Egil (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-08)
      <p><i>Background:</i> The study’s purpose was to evaluate the performance of a five-type HPV mRNA test to predict cervical intraepithelial neoplasia grade 3 or worse (CIN3+) during up to 12 years of follow-up. <p><i>Methods:</i> Overall, 19,153 women were recruited by gynecologists and general practitioners in different parts of Norway between 2003 and 2004. The study population comprised 9582 ...
    • Risk of venous thromboembolism from use of oral contraceptives containing different progestogens and oestrogen doses: Danish cohort study, 2001-9 

      Lidegaard, O; Nielsen, L.; Skovlund, CW; Skjeldestad, Finn Egil; Løkkegaard, Ellen (Journal article; Tidsskriftartikkel; Peer reviewed, 2011-10-25)
      Objective To assess the risk of venous thromboembolism from use of combined oral contraceptives according to progestogen type and oestrogen dose.<p> <p>Design National historical registry based cohort study. <p>Setting Four registries in Denmark. <p>Participants Non-pregnant Danish women aged 15-49 with no history of thrombotic disease and followed from January 2001 to December 2009. <p>Main ...
    • Socioeconomic conditions and number of pain sites in women 

      Rannestad, Toril; Skjeldestad, Finn Egil (Journal article; Tidsskriftartikkel; Peer reviewed, 2012)
      Women in deprived socioeconomic situations run a high pain risk. Although number of pain sites (NPS) is considered highly relevant in pain assessment, little is known regarding the relationship between socioeconomic conditions and NPS. The study population comprised 653 women; 160 recurrence-free long-term gynecological cancer survivors, and 493 women selected at random from the general population. ...
    • Station of the fetal head at complete cervical dilation impacts duration of second stage of labor 

      Ludvigsen, Elisabeth; Skjeldestad, Finn Egil (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-10-31)
      <i>Objective</i> - To examine the association between station of the fetal head at complete cervical dilation and duration of second stage of labor, as well as prolonged second stage of labor, without and with the use of analgesia (EA).<p> <p><i>Study design</i> - We conducted a population-based retrospective cohort study of 3311 women with a singleton pregnancy, gestational age ≥ 37<sup>0</sup> ...
    • Station of the fetal head at complete dilation impacts duration of second stage of labor 

      Ludvigsen, Elisabeth; Skjeldestad, Finn Egil (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-10-31)
      <i>Objective</i> - To examine the association between station of the fetal head at complete cervical dilation and duration of second stage of labor, as well as prolonged second stage of labor, without and with the use of analgesia (EA).<p> <p><i>Study design</i> - We conducted a population-based retrospective cohort study of 3311 women with a singleton pregnancy, gestational age ≥ 370 weeks, and ...
    • Surgeon’s experience and clinical outcome after retropubic tension‐free vaginal tape - A case series 

      Holdø, Bjørn; Møllersen, Kajsa; Verelst, Margareta; Milsom, Ian; Svenningsen, Rune; Skjeldestad, Finn Egil (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-02-27)
      <i>Introduction</i> - The retropubic tension‐free vaginal tape procedure has been the preferred method for primary surgical treatment of stress and stress‐dominant mixed urinary incontinence in women for more than 20 years. In this study, we assessed associations between surgeon's experience with the primary tension‐free vaginal tape procedure and both perioperative complications and recurrence ...
    • Trends in initiation of hormonal contraceptive methods among teenagers born between 1989 and 1997 in Norway and the United States 

      Ahrens, Katherrine; Skjeldestad, Finn Egil (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-07-28)
      Objective - To assess initiation of hormonal contraception among women aged 15-19 in the US and Norway by birth cohort.<p> <p>Study design - We used population-based survey (US) and administrative (Norway) data to estimate the cumulative probability of age at first use of hormonal contraception for female residents born between 1989 and 1997 in 3-year birth cohorts. Differences between countries ...