Friederike Hammersen

Ms. Friederike Hammersen

orcid

Research Focus & Metrics

Academic Career Length

11Years (2016-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
FHFriederike Hammersen
Friederike Hammersen
HNHildegard Niemann
Hildegard Niemann
JHJens Hoebel
Jens Hoebel
The health implications of environmental noise, especially cardiovascular effects, have been studied intensively. Research on associations between noise and mental health, however, has shown contradictory results. The present study examined associations between individual levels of noise annoyance due to noise from various sources in the living environment and mental health of adults in Germany. It evaluated whether these associations persisted after adjusting for potential covariates. Data were obtained from the cross-sectional “German Health Update” study 2012 (GEDA 2012), a national health interview survey among adults in Germany conducted by the Robert Koch Institute (n = 19,294). Noise annoyance questions referred to overall noise and that from road traffic, neighbours, and air traffic. Mental health was measured with the five-item Mental Health Inventory. Bivariate analysis showed associations between high levels of noise annoyance and impaired mental health for all noise sources except air traffic. After adjusting for covariates (sociodemographic factors, chronic disease, and social support), both men and women who reported high overall noise annoyance showed more than doubled odds of impaired mental health compared to those who were not annoyed. The odds of impaired mental health in the highest noise annoyance category from road traffic and neighbours were also significantly increased. These findings indicate that high noise annoyance is associated with impaired mental health and that this association can vary with the source of environmental noise. Further research on covariates of this association is necessary. Particularly, longitudinal data are required to establish the direction of associations and to address questions of causality.

19 July 2019 in Breast Care
Verified
Journal Article
Closed access
PDF file
FHFriederike Hammersen
Friederike Hammersen
TPTelja Pursche
Telja Pursche
DFDorothea Fischer
Dorothea Fischer
AKAlexander Katalinic
Alexander Katalinic
AWAnnika Waldmann
Annika Waldmann
Background: Complementary and alternative medicine (CAM) has received increasing attention in Western countries and is especially common among breast cancer (BC) patients. So far, its effectiveness has not been well studied, which is in part due to the contextuality of CAM along with a lack of information of why patients use it. Objectives: Young BC patients constitute a special patient group regarding clinical characteristics, QOL, and their role in society. Since little is known about their CAM use, this study aimed at exploring it as well as their reasons for CAM use. Methods: Data on CAM and sociodemographics were collected via questionnaire in the context of a rehabilitation program for young mothers with BC. Initial BC diagnoses were between 2009 and 2014 (recruitment period 2012–2015). Clinical characteristics were derived from the patient files. Descriptive statistics were used to describe frequencies and statistically significant differences were tested. Results: Among the 827 patients, with an average age of 39.6 years, 62.5% had used CAM with regard to their cancer. CAM use was significantly higher in women with higher educational level, higher employment status, and statutory health insurance, respectively. The average monthly expenses on CAM were EUR 50. Every 5th woman used CAM without her physician’s knowledge. The types most often used were dietary supplements with vitamins or minerals. The most frequent reasons for CAM use were to strengthen the immune system, support conventional medicine, and combat side effects. Conclusions: CAM plays an important role for young BC patients with regard to prevalence and monthly expenses, and was used for a wide range of reasons. Certain subgroups with more frequent CAM use could be identified. Physicians should therefore proactively talk about CAM with their young BC patients, so that patients do not need to rely on information sources on CAM outside the medical system.

2 November 2020 in Psycho-Oncology
Verified
Journal Article
Open access
PDF file
FHFriederike Hammersen
Friederike Hammersen
TPTelja Pursche
Telja Pursche
DFDorothea Fischer
Dorothea Fischer
AKAlexander Katalinic
Alexander Katalinic
AWAnnika Waldmann
Annika Waldmann
Objective: To evaluate the psychosocial situation of breast cancer (BC) patients with dependent children, with regard to who used family‐centered psychosocial support (PS) services, reasons against using it, as well as existing, unmet needs, and current PS need.Methods: Data were collected via survey and patient files during an inpatient rehabilitation program for mothers with BC, who were accompanied by a child <12 years. Descriptive statistics and tests for statistical significance were used.Results: Out of the total of 561 patients, 23.0% had used family‐centered PS services before. Common reasons against it were enough support, no anticipated need and organizational issues. Patients stated a high number of unmet needs. The most urgent ones related to their children. About 59.3% of mothers stated a current PS need (PSN) and 33.3% a need for their children. Little social support and a worse maternal HRQOL, but not time since diagnosis, were related to a higher PSN in mothers and children (bivariate association).Conclusion: Among BC patients with dependent children, clinicians need to take the whole family and their support needs into account. They should know about the existing organizational barriers, which need to be overcome with the help of tailored offers. Patients with low HRQOL, little social support and single‐mothers (with regard to children's PSN) need special attention as these can be indicators of high PSN.

6 November 2017 in PLOS ONE
Verified
Journal Article
Open access
PDF file
FHFriederike Hammersen
Friederike Hammersen
PLPhilip Lewin
Philip Lewin
JGJudith Gebauer
Judith Gebauer
IKIlonka Kreitschmann-Andermahr
Ilonka Kreitschmann-Andermahr
GBGeorg Brabant
Georg Brabant
AWAnnika Waldmann
Annika Waldmann
This study investigated sleep quality and health-related quality of life (HRQOL) among long-term survivors of Hodgkin (HL) and non-Hodgkin lymphoma (NHL). The aim was to explore the impact of personal and health-related factors on sleep quality as well as associations between sleep quality and HRQOL. For the postal survey, participants with a minimum age of 18 years initially treated between 1998 and 2008 were recruited via the population-based cancer registry in Schleswig-Holstein, Northern Germany. Questionnaires included amongst others the Pittsburg Sleep Quality Index (PSQI) and the 36-Item Short Form Health Survey (SF-36v1). Descriptive and comparative statistics were performed. Additionally, a regression analysis was conducted to identify predictors of sleep quality. In total, we recruited 515 participants (398 NHL, 117 HL) with a mean age of 63.1 years. Approximately half of the survivors were classified as good sleepers. HRQOL scores differed between good and poor sleepers with lower scores in poor sleepers. In a prediction model, self-reported depression, exhaustion, higher age, inability to work, endocrinological disorders and female gender classified as predictors of sleep quality. This study highlights the impact of sleep quality on HRQOL in long-term survivors of NHL and HL. Thus, sleep quality should be routinely assessed during follow-up of cancer survivors with special attention to patients with potential risk factors.

5 September 2018 in Breast Care
Verified
Journal Article
Open access
PDF file
TPTelja Pursche
Telja Pursche
JBJulia Bauer
Julia Bauer
FHFriederike Hammersen
Friederike Hammersen
ARAchim Rody
Achim Rody
AWAnnika Waldmann
Annika Waldmann
DFDorothea Fischer
Dorothea Fischer
Background: The purpose of this study was to analyze the effect of breast cancer therapy on fertility concerns and sexuality of young mothers with breast cancer in Germany. Methods: During a mother-child rehabilitation program, 1,191 young mothers with locoregional primary breast cancer, treated between 2006 and 2014, were recruited. Data included sociodemographic data, TNM stage, tumor biology, therapies, and patient-reported outcomes such as sexuality and fertility concerns. Results: The mean age at diagnosis was 40 years. Approximately a quarter of the patients stated that family planning had not been completed at the time of diagnosis. Nearly half of all patients had been informed as to how treatment could affect fertility, but counseling at a specialized fertility center was offered to only 13%. Of all patients, 4% took a consultation and 2% underwent fertility preservation procedures. Conclusion: Our study indicates that only a minority of patients is referred to fertility centers although family planning is incomplete at the time of diagnosis in about 25% of young women with breast cancer. Thus, these patients should not only be informed about the effects of treatment on fertility and sexuality, but should be referred to a fertility center.

3 May 2020 in Breast Care
Verified
Journal Article
Closed access
PDF file
JPJonathan Pruessmann
Jonathan Pruessmann
TPTelja Pursche
Telja Pursche
FHFriederike Hammersen
Friederike Hammersen
AKAlexander Katalinic
Alexander Katalinic
DFDorothea Fischer
Dorothea Fischer
AWAnnika Waldmann
Annika Waldmann
Background: Breast cancer in young women is associated with unfavourable tumour biology and is the main cause of death in this group. Conditional survival analysis estimates survival rates under the pre-condition of already having survived a certain time. Objectives: To describe conditional disease-free and overall survival of female breast cancer patients according to clinical subtypes and age. Methods: This study analyses information from 1,858 breast cancer patients aged between 21 and 54 years, who were taking part in a post-therapeutic rehab programme (time between diagnosis and rehab start: maximum 24, median 11 months). Mean follow-up time was 3.6 years. We describe biological, clinical and pathological features in regard to different age groups (<40 and ≥40 years) and report conditional 5-year survival rates for overall and disease-free survival, and Cox proportional hazard models. Results: Very young and young patients differed in regard to hormone receptor negativity, tumour grade, lymphovascular invasion, and molecular subtypes. Young women bore triple-negative and HER2-like disease more frequently. Conditional 5-year overall survival did not differ substantially between women <40 and 40–54 years of age (95 vs. 96%). It was highest for women with cancer of the luminal A subtype (98%) and lowest for the triple-negative subtype (91%). Lymphangiosis was a significant predictor of death. Results for disease-free survival were comparable. Conclusions: Conditional 5-year overall survival after non-metastatic breast cancer was as high as 95.5%, and disease-free survival was 85.2%. When controlling for time between diagnosis and rehab start, molecular subtypes influenced overall and disease-free survival prospects. When additionally controlling for clinical characteristics, this effect only remained stable for disease-free survival.