PHN
Public Health Nutrition
Public Health Nutrition
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Lernkarten
Define goals and objectives for public health interventions:
Goal i.e.: reduce exposure to second-hand tobacco smoke in children
Short-term objective i.e.: at the end of the first year of the program, 50% of the adults in xxx will be aware of messages about the hazards of secondhand tobacco smoke
Long-term objective i.e.: By the end of 2020, reduce by 25% the prevalence of adult smokers in the home. Criteria: SMART
Recognize the complexity of nutritional epidemiology
Diet as a complex expsoure (we all have to eat..), Confounding in nutritional epidemiology, measurement error in nutritional epidemiology, exerimental studies often not feasible (also time-intensive, costly, problems with compliance, blinding difficult), preliminary or unconfirmed findings come to the attention of the media and the general public => no single study can provide a definitive answer and no study design is without limitations".
mortality
Mortality: the number of death in a population during a given time or place
Prevalence:
current cases (new and preexisting cases)
Incidence:
number of new events/cases in a defined population in a specific period of time
Relative Risks
baseline risk for the outcome => Absolut Risk intervention group is divided by the absolute Risk of the control group, is this subtractet from 100% = Relative Risk Reduction
Absolut Risk
percentage of people with the outcome in a group. Is calculated for the intervention and control group and then compared = Absolute Risk Reduction. This defines the effectivness of an intervention.
Baseline Risk
(Risk before implicate the interverntion) is important to get to the absolut and the relative risk.
Odds ratio:
quantifies the strength of the association between two events, A and B
Outcome:
Result (i.e. NCDs)
Exposure
i.E. vegetable intake
Confounder
factor who influence another factor. I.e. People who eat more vegetables might have more physical activity usw. So you don't know, which factor has the most effect on the outcome (less coronary heart disease).
Explain criteria of causal associations
Strength of association, consistency of a finding in multiple studies and populations, presence of a dose-response gradient, appropriate temporal relationship, biologic plausibility, coherence with existing data
Understand the use of qualitative research for defining problem, its causes and its use in planning cycle
Detailed Describtion, high explanation, hypothesis generating. It characterize how and why things are happening. In-depth study of a smaller number of cases. Data is primarily text (less numeriical). Explores human experiences (life events), perceptions and feelings. Very interactive between the interviewer and the participant.
=> can be used throughout the Cycle:
Understand the most common methods applied in qualitative research
In-depth interviews (open-ended questions, ask experiences, feelings, opinions, knowledge): free list questions, card sorting and rating, stimulus (photo, vignettes, writing sample), real-time experiences, thind-out-loud
Observations (Interpersonal interactions, observer's description of activities, bahviors, actions; process - how to do things; field notes). Participant in social setting.
Documents (written material and documents. EX: reports, program records, clinical records, diaries, publications, letters, written responses to questions, photographs, videos, social media posts. Data collected: text and visual data).
Focus Group Discussion (6-10ppl in one group, shared experience, data collected: transcripts or videos
Know how to define a community and social settings
Community Setting: Organisations, Services, Products: Structural and behavioral interventions are implemented in the community setting => where people access products and services.
Settings are Social = Social Setting: Schools, Universities, Day-care centers, workplace, church, community centers, grocery stores, open market/farmers markets, restaurants, local club, community group.
Difference between monitoring and evaluation
Monitoring: continuing function, shows early indications of progress or lack thereof, in the achievement of results (milestones, target). It is led by the management team
Evaluation: selective, attemps to systematically and objectively assess progress towards and the achievement of an outcome. Evidence function => done by an independent party.
Purpose of monitoring/evaluation
Monitoring: does one have a quality program that is functioning as intended? Purpse: provide informationen on results achieved (activitites and outputs), actionable information that yields recommendation to improve or mage better the programm.
Evaluation: Is there a credible linage between the intervention undertaken and achievements of outcomes? Decision-making: do we continue to fund the program, do we expand the program or do we shut it down?
Define change process, outputs and outcomes
Outcome: observable, relevant changes achieved during (and because of) the lifecycle of the project (Anthropometry, biochemical, physical activity, dietary behaviors)
Ouputs:the results of program/intervention activities
Change process: make significant changes in the way they operate
Key characteristics of monitoring and evaluation
Monitoring: You need something to monitor, before you start monitoring. You need information on the results achieved. For example if the products are not getting to the population, you can call them and ask what is happening? Monitoring needs time, so it is expensive
Evaluation: You only evaluate, if you have a working program. The entire spectrum of the work is evaluated.
Tools used for monitoring and types of evaluation
Monitoring: strategies and tools based on pragram needs for tracking results and ability to make changes
Evaluation: Designs vary depending on program, outcomes and context and level of cerainty required.
Describe what NCDs are, how they are distributed and which trends they follow (in CH)
Cardiovascular diseases, Diabetes, Chronic respiratory diseases, cancer, chronic neurological disease like dementia (Alzheimer), Arthitis and chronic disease of the muscoskeletal system. The incidence of cancer is higher in man than in woman (probably due to lifestyle and hormones). Incidence is probably increasing,
How can diet and other lifestyle factors influence NCD-risk?
Because it is influencing the body. Unhealthy eating, excess alcohol, physical inactivity and tobacco use have all an impact to the body. It is leading to overweight / obesity, alcohol and tobacco are toxic for the cells.
Risk factors: Excess calroies, overweight/obesity, alcohol, food processing, red and processed red meat, salt, refined sugars (e.g. from SSBs), refined carbohydrates (e,g, white bread, pasta, rice), unhealthy fats, food contamination
In which senses differs publix health from individual health
Individual: assessment, examination => focus on disease
Population: Salutogenesis. Not only the individual but also the envirement (workplace, structural, policies, social envirement) => are they favoral for an individual to stay healthy. => prevention
Which types of prevention exist?
Primary prevention (healthy environment, prevent risk factors): not targeted
Secondary prevention (i.e. smoking, alcohol and obesity prevention, assess and minimize health risks): targeted
Tertiary prevention (especially in elderly population i.e. person after stroke: increse the immobility, that he can care after himself. Slow down progression of disease, avoid complications, relaps.
Which types of structural public health measures exist?
- Educational approach
- Social, economical, organizational approach
- Political, legal, regulatory approach => the more effective, the less autonomy
In liberal countries it is almost not possible to be very restrict, except people understand the meaning of it and that it is helpful.
Structural is only possible theoretical based on other countries. So the"public health model" is not working
How frequent is overweight / obesity globally and how it is distributed within a population
The prevalence is rising globaly, mostly in islands and the arab countries, latine america and the USA.
In CH there are possibly social reasons, that the prevalence is higher in men. In CH there is a low prevalence compared to other countries. In other countries is the prevalence higher in woman (africa, arab) than in men or sometimes it is equal => but these are mostly selfreported data, so there could be a bias.
Social background / education has the bigger impact than nationality
How is overweight / obesity defined and how are they categorized in adults and children
Adults: waist circumfence or BMI >25 = overweight, BMI >30 = obesity
Children: Percentile. It is more important, to see how the child is moving in between the percentile.
Which health risks are associated with overweight / obesity and how modulates health behaviour this association
CVD, Stroke, respiratory disease. It reduces the overall life expectency, but this is also depending on the health care system
Overweight influece the incidence of cancer less, except for GIT-Organs and sexual organs (because the fat-tissues is hormonactive).
Increased mortality rate is not only depending on the BMI, but also on other riskfactors like smoking, physical activity, alcohol
How can the environment influence the risk for overweight /obesity?
Environment has a bigger potential to be changed than intrapersonal factors. Architecture and environment planing has aswell a big impact on healthy behaviour (for example in terms of physical activity) => all accessibly by car, big malls and so on. TV consumtion is highly associated with obesity. Labeling has a big impact aswell => it looks "healthier"
What approaches exist for structural obesity prevention and which of them are more or less promising?
Nutriscore: Problem: the product remains ultraprocessed because the ingrediens are just ajusted to get a better score. Consumer perception is influenced. But it could lead to new formulas (like less sugar).
SIGA: Based on processing status and ingrediant
Examples from other field of public health and how experiences could be transferred to obesity
I.e. tobacco / AIDS / Drunk driving => warning labeling, media campaign, tax, restrict food advertising on children, restrict sale of high calorie beverages in schools, offer candy-free checkout lines in grocery stores, counseling on nutrition and physical activity/behavioral weight loss counselling, provide fresh fruits and vegetables to school children in classrooms.
Explain the growing interest of food industry for public health
Specific needs of customers, to adapt products to current laws, Responsible: having a role in the current situation, they may be part of the solution (to get healthier), to be ready for what could come next?
Put to the fore the key challenge of food industry addressing public health issues
No trust in food industry. Doctor and dietitians are trusted more => so the industry address them to get more trusted by the population. Local aspects need to be considered.
Give examples of actions organised by companies to answer WHO Global action Plans on NCDs
- Reduce the level of salt/sodium added to food (prepared or processed)
- Increase availability, affordability and consumption of fruit and vegetables
- Reduce saturated fatty acids in food and replace them with unsaturated fatty acids
- Replace trans-fats with unsaturated fats
- Reduce the content of free and added sugars in food and non-alcoholic beverages
- Limit excess calorie intake, reduce portion size and energy density
Define what health economics are and understand their usage
Health economics is a branch of economics concerned with issues related to efficiency, effectiveness, value and behaviour in the production and consumption of health and healthcare. It study the functioning of healthcare systems and health-affecting behaviours such as overeating or smoking.
=> To find out which solution is the most cost effective
=> translate a health benefit into an economic benefit
=> predict the costs of a disease and a health intervention
Know important concepts related to migrant health
- Take the diversity of the migrant population into account
- Transcultural approach: focuses on the similarities between people from different backgrounds
- Good networking with the target population and inclusion of persons with an ethnic minority background are needed for a successful transcultural work
- Empowerment and the strengthening of health literacy are essential
- Communication must consider the specific characteristics of the target group (not only linguistic adjustments; analysis of communications channels; involvement of representatives of the target group)
- Prevention work in the area of migration goes beyond the health sector
Understand some specific health risks of this target group
Migration-related factors (trauma, poor healthcare in country of origin, discrimination, uncertain residence status)
Socio-economic situation (low wages, precarious working conditions)
Limited knowledge of the healthcare system and poor health literacy (use of medical services at a late stage or not at all)
Structuring of the healthcare system (insufficient patient and target group orientation, communication difficult)
Understand the determinants leading to specific diseases for this target group
Consumption of SSB in children:
Influencing factors: social cultural, social economic status, family, bad habits => School policies restricting, nutritonal guidelines.
Understand the determinants leading to specific diseases for this target group
Physical activity
they make more sports outside and less clubsports (because they don't know about it). Children get less active with age. Rates of physical activity are relatively low among some minorities (adults). Most of them have low language levels, so there is another communication strategie needed