JBJan Brynhildsen

Jan Brynhildsen

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Previous Organizations / Institutes

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Jan Brynhildsen has a total of 42 co-authors. Here are the top co-authors by number of shared publications:


Latest Publications

  • Open Access

    Contraceptive choices and satisfaction: a cross-sectional analysis of sociodemographic influences

    by Maria Åkesson, Jan Brynhildsen, Tanja Tydén, Niklas Envall, Helena Backman, Yvonne Skogsdal

    Introduction: Investigating factors associated with contraceptive satisfaction is important to create a basis for tailored contraceptive counseling. In this study, we aimed to explore how sociodemographic characteristics affected women’s level of satisfaction and choice of different contraceptive methods, using data collected during a randomized controlled trial (RCT) in the region Örebro County, Sweden. Methods: This cross-sectional study utilized data from a previously conducted RCT. Eligible participants were women aged 20–40 years who sought contraceptive counseling. All women who participated in the RCT and completed a follow-up questionnaire were included in the analysis. Results: Between February 2015 and March 2016, 1,946, participants were enrolled in the trial, with 1,198 (61.6%) completing the 2-month follow-up questionnaire. Overall, 81.3% of women reported being ‘very satisfied’ or ‘satisfied’ with their contraceptive method. Participants aged 27–40 years used long-acting reversible contraception (LARC) to a higher extent compared with those aged 20–26 years (adjusted odds ratio [aOR] 1.92, 95% confidence interval [CI] 1.44–2.56). Older age was associated with lower satisfaction (aOR 0.55, 95% CI 0.33–0.94). Participants with a body mass index (BMI) ≥ 25 more often used LARC (aOR 1.68, 95% CI 1.24–2.28) but were also more likely to report no use of contraceptives at all (aOR 1.56, 95% CI 1.01–2.43) compared with BMI < 25. The level of satisfaction tended to decrease with increasing BMI. Country of birth and educational level were not associated with satisfaction. Conclusions: The use of LARC was more common among women with BMI ≥ 25 and older women. While BMI, education, and place of birth did not affect satisfaction, women aged 27–40 reported lower satisfaction. These findings contrast with prior studies and highlight the complex sociodemographic influences on contraception experiences.


  • Open Access

    Pulmonary embolism in menopausal hormone therapy: a population-based register study

    by Micaela Sundell, Anna-Clara Spetz Holm, Mats Fredrikson, Mats Hammar, Mikael Hoffmann, Jan Brynhildsen

    Oral but not transdermal menopausal hormone therapy (MHT) increases the risk of venous thromboembolism. There is no evidence regarding the risk of the serious complication pulmonary embolism (PE). ...


  • Open Access

    Students’ and teachers’ attitudes towards PBL-curriculum components in a medical programme – a follow-up study

    by Rasmus Birch Tyrberg, Mats Hammar, Jan Brynhildsen, Zoltan Szabó, Eva Nylander, Bo Davidsson

    Objective: The aim was to explore students’ and teachers’ attitudes towards horizontal and vertical integration and other components of the curriculum, and to compare these results with data from a study at our medical school published in 2002. Methods: A questionnaire with 17 questions regarding different components of our curriculum was sent to students and staff at our medical school. They were asked to rate the importance of different components on a Likert scale from 1-6. We compared the answers between the two groups, and also compared them with the results from 2002. Results: Horizontal and vertical integration were rated as very important components (Teachers (n=283) median 5 and 5, Students (n=596) 6 and 5 respectively). Students valued lectures and clinical rotations more highly than teachers. Teachers considered laboratory training, training in searching scientific literature, scientific projects, basic education in ethics, reading and discussion of fictional literature, interprofessional components and examinations as significantly more important than the students did. Conclusions: Attitudes have remained positive towards horizontal and vertical integration despite major changes in the curriculum. The majority of the components of our curriculum were well appreciated, indicating that our curriculum is robust, but some components warrant inspection and possible revision. Keywords: Medical education; Horizontal integration; Vertical integration; Problem-based learning Keywords: Medical education; Horizontal integration; Vertical integration; Problem-based learning

  • Open Access

    Sexual function changes attributed to hormonal contraception use – a qualitative study of women experiencing negative effects

    by Agota Malmborg, Louise Brynte, Gabriella Falk, Jan Brynhildsen, Mats Hammar, Carina Berterö

    Objective: To increase the understanding of women who experience negative effects on sexual function when using hormonal contraception. Methods: We performed 24 in-depth interviews with women who had previously experienced negative sexual function effects while using hormonal contraceptives. The thematic analysis method was used. Results: ‘After experience comes insight’, ‘Lubrication and desire go hand in hand’, ‘Mental wellbeing comes before desire’ and ‘The contraceptive counsellor potentially facilitates insight and decision-making’ were the main themes found in the study. Conclusions: This selected group of women described lubrication difficulties and decreased sexual desire associated with both contraceptive use and the menstrual cycle. Contraceptive use became easier with age and with better understanding. The contraceptive counsellor could facilitate the process. Further choice between hormonal or non-hormonal contraceptive methods depended primarily on experienced adverse effects on mood, and secondarily on sexual function, weighed against the advantages or disadvantages experienced during the person’s own menstrual cycle.


  • Open Access

    Risk of abortion within 1–2 years after childbirth in relation to contraceptive choice: a retrospective cohort study

    by Karin Lichtenstein Liljeblad, Helena Kopp Kallner, Jan Brynhildsen

    Objectives: The primary objective of the study was to investigate whether the choice of long-acting reversible contraception (LARC) was associated with the risk of abortion over a period of 24 months postpartum. The secondary objective was to analyse whether other significant factors were affecting the risk of abortion during this period. Methods: In this retrospective cohort study, we analysed 11,066 women who had delivered in three Swedish cities during 2013 and 2014. Demographic and medical variables were obtained from medical records. Attendance at the postpartum visit, choice of postpartum contraception and history of abortion was noted. Logistic regression analysis was performed to assess factors associated with the risk of abortion. The main outcome measure was the proportion of women with abortion up to 24 months postpartum. Results: Data from 11,066 women were included in the final analysis. Within 12–24 months after delivery 2.5% of women had an abortion. The choice of LARC after childbirth reduced the risk of subsequent abortion (odds ratio 0.74; 95% confidence interval [CI] 0.60, 0.91; p = .005). Smoking, age <25 years and have had a previous abortion significantly increased the risk of abortion during follow-up, whereas exclusive breastfeeding decreased the risk. Conclusions: Increasing the proportion of women who choose LARC postpartum could decrease the risk of abortion for up to 2 years after childbirth.


  • Open Access

    Patterns of prescription and discontinuation of contraceptives for Swedish women with obesity and normal-weight women

    by Micaela Sundell, Charlotte Ginstman, Agnes Månsson, Ingrid Forslund, Jan Brynhildsen

    Purpose: This study aimed to explore the prescription of different contraceptive methods to Swedish women with obesity and to compare the pattern of prescription and adherence to treatment between this group and normal-weight women. Materials and methods: This study included 371 women with obesity and 744 matched normal-weight women, aged 18–40. Medical records were scrutinised for the period 1 January 2010 to 31 December 2014. The retrieved variables included: background characteristics, prescribed contraceptive methods, adverse effects, duration of treatment, reason for discontinuation and bleeding pattern. Result: Progestin-only pills were mainly prescribed to women with obesity (44% vs. 20%, p = 0.001) whereas combined hormonal contraception was mainly prescribed to normal-weight women (60% vs. 21%, p < 0.0001). Thirty-three percent vs. 25% (p = 0.003) discontinued their contraceptive method within 1 year. The most commonly declared reason for discontinuation was bleeding disturbance (14.7% vs. 9.6%, p = 0.008). Conclusion: The most commonly prescribed contraceptive method in women with obesity was progestin-only pills, but surprisingly many women with obesity were prescribed combined hormonal contraception despite current Swedish and European guidelines. Incident users with obesity were significantly more likely to discontinue their contraceptive method within the first year of the study period, compared with incident normal-weight users.


  • Ongoing or previous mental disorders predispose to adverse mood reporting during combined oral contraceptive use

    by Hanna Bengtsdotter, Cecilia Lundin, Kristina Gemzell Danielsson, Marie Bixo, Juliane Baumgart, Lena Marions, Jan Brynhildsen, Agota Malmborg, Ingela Lindh, Inger Sundström Poromaa

    Previous studies have emphasised that women with pre-existing mood disorders are more inclined to discontinue hormonal contraceptive use. However, few studies have examined the effects of combined oral contraceptives (COC) on mood in women with previous or ongoing mental disorders. This is a supplementary analysis of an investigator-initiated, double-blinded, randomised clinical trial during which 202 women were treated with either a COC (1.5 mg estradiol and 2.5 mg nomegestrolacetate) or placebo during three treatment cycles. The Mini International Neuropsychiatric Interview was used to collect information on previous or ongoing mental disorders. The primary outcome measure was the total change score in five mood symptoms on the Daily Record of Severity of Problems (DRSP) scale in the intermenstrual phase of the treatment cycle. Women with ongoing or previous mood, anxiety or eating disorders allocated to COC had higher total DRSP Δ-scores during the intermenstrual phase of the treatment cycle in comparison with corresponding women randomised to placebo, mean difference 1.3 (95% CI 0.3-2.3). In contrast, among women without mental health problems, no difference in total DRSP Δ-scores between COC- and placebo users was noted. Women with a risk use of alcohol who were randomised to the COC had higher total DRSP Δ-scores than women randomised to placebo, mean difference 2.1 (CI 95% 1.0-3.2). Women with ongoing or previous mental disorders or risk use of alcohol have greater risk of COC-induced mood symptoms. This may be worth noting during family planning and contraceptive counselling.


  • Likelihood of repeat abortion in a Swedish cohort according to the choice of post‐abortion contraception: a longitudinal study

    by Helena Kilander, Siw Alehagen, Linnea Svedlund, Karin Westlund, Johan Thor, Jan Brynhildsen

    Introduction: Despite high access to contraceptive services, 42% of the women who seek an abortion in Sweden have a history of previous abortion(s). The reasons for this high repeat abortion rate remain obscure. The objective of this study was to study the choice of contraceptive method after abortion and related odds of repeat abortions within 3–4 years.Material and methods: This is a retrospective cohort study based on a medical record review at three hospitals in Sweden. We included 987 women who had an abortion during 2009. We reviewed medical records from the date of the index abortion until the end of 2012 to establish the choice of contraception following the index abortion and the occurrence of repeat abortions. We calculated odds ratios (OR) with 95% CI.Results: While 46% of the women chose oral contraceptives, 34% chose long‐acting reversible contraceptives (LARC). LARC was chosen more commonly by women with a previous pregnancy, childbirth and/or abortion. During the follow‐up period, 24% of the study population requested one or more repeat abortion(s). Choosing LARC at the time of the index abortion was associated with fewer repeat abortions compared with choosing oral contraceptives (13% vs. 26%, OR 0.36; 95% CI 0.24–0.52). Subdermal implant was as effective as intrauterine device in preventing repeat abortions beyond 3 years.Conclusions: Choosing LARC was associated with fewer repeat abortions over more than 3 years of follow up.


  • Symptoms of multiple sclerosis in women in relation to cyclical hormone changes

    by Per Holmqvist, Mats Hammar, A.-M. Landtblom, Jan Brynhildsen

    Objectives To prospectively investigate if women with multiple sclerosis (MS) experience changes in MS-symptoms in relation to cyclical hormonal changes. Methods Sixty-three women with MS, either with regular, spontaneous menstrual cycles or taking combined oral contraceptives (COCs), were asked to score their MS symptoms every day during three cycles. Symptom scores were analysed in relation to different phases of the spontaneous menstrual- or pill-driven cycle. Results Twenty-three women completed the score record. Among the 16 women who were not using a COC there were no significant differences in symptom scores between the phases of the menstrual cycle. The seven women taking a COC reported significantly higher symptom score points for weakness, numbness and tiredness during the pill-free interval compared with the phase during which they took the COC daily. Conclusions This prospective study appears to contradict earlier retrospective studies regarding variations in MS symptoms in relation to the menstrual cycle in women who are not using a COC. The lower symptom scores during the three weeks of pill taking suggest a positive effect of the steroids on the manifestations of MS. Further studies concerning both short- and long-term effects of OC-use on MS symptoms are needed.