Nov. 18th: The Research/Health Outcomes Flashcards
This is the lecture where she fucked us on the slides (32 cards)
What type of study allows us to make conclusions about causation?
(e.g., X causes Y)
Experimental design/randomized design
What is it about an experimental design/randomized design that allows us to infer causation?
(3)
- Manipulation of an independant variable
- Randomization
- Control of confounding variables
- Manipulation ensures a direct test of cause and effect
- Randomization reduces bias and balances confounding variables
- Control eliminates alternative explanations
Why is randomization to groups so important to an experimental design?
Randomizaiton (randomly assigning) ensures that individual differences (e.g., age, gender, prior knowledge) and unknown confounding variables are evenly distributed across groups
What type of research design was employed in the Margarita et al. study of trait mindfulness and health behaviours?
Meta-analysis (Correlational or prospective studies)
What is a meta analysis?
A study that combines and analyzes the results of multiple independent studies
What were the findings of the Margarita et al. study of trait mindfulness and health behaviours?
(5)
- Trait mindfulness has a small, positive association with health behaviors
- Size of relationship is similar to other personality traits
- Strongest relationship was found for physical activity
- Significant relationshop also between mindfulness and sleep & alcohol use
- Nonsignificant relationships between mindfulness and smooking & drug use
What did Margarita et al. study?
Looked at the association between trait mindfulness and health behaviors
What does the Margarita et al. study of trait mindfulness and health behaviours conclude/tell us?
(2)
- People who are generally mindful are more likely to engage in healthy behaviors and less likely to engage in unhealthy behaviors
- We cant assume causality
However this relationship is complex and nuanced
Also she didnt give us enough time to write this answer down so this is what NotebookLM helped me find
What else might account for associations that were found in the Margarita et al. study?
Could be that both variables are associated with another variable that accounts for their association
What can’t we conclude from the Margarita et al., study?
Cant make conclusions about directionality
What type of design was used in the Raffault et al study that looked at mindfulness training on weight loss and health behaviours in overweight and obese adults?
Systematic review & Meta-analysis (Experimental design)
What studies did they include?/What were the inclusion criteria (Raffault et al)?
(3 criteria)
Inclusion criteria:
* Randomized design
* Intervention incilved mindfulness training
* Adult participants
12 eligible studies
What were the results of the Raffault et al. study?
Mindfulness training impacted:
* Implusive eating & binge eating
* Physical activity (significant increase)
Did not impact:
* Weight/BMI
What were some of the weaknesses of the Raffault et al. study?
- Lots of variability between studies
- Quality of included studies is questionable
What conclusions can we draw from the research on mindfulness and health behaviours?
- Research on the topic is on the rise
- Trait mindfulness has a small relationship with health behaviors
- Mindfulness traning may lead to changes in some heath behaviors
- More research is needed
What is an active control group?
A group in a scientific study or clinical trial that receives an alternative treatment or intervention, rather than no treatment
(ex: as in a placebo or passive control group)
What research design was used in the Victorson et al review on mindfulness meditation and chronic disease?
Systematic review & meta-analysis
What studies did they include/What were their inclusion criteria (VIctorson et al.)?
Inclusion criteria:
* Experimental/randomized designs
* Group-based mindfulness interventions lasting 2+ weeks
* Broad populations (but community dwelling)
* Lifestyle medicine outcomes (physical syptoms)
Found 59 studies
Who were most often participants of the studies included in the review (Victorson et al.)?
Adults
What outcomes were assessed (Victorson et al.)?
(6)
- Diet/weight
- Negative affect
- Pain
- Smoking and substance use
- Symptom burden
- Cardiovascular symptoms
What did they find (Victorson et al.)?
- Mindfulness interventions were superior to control groups on 2/6 outcomes: diet/weight & symptom burden
- No difference between groups on other outcomes
- Effect varied based on type of control group (active was better)
- Length of intervention made no difference
What recommendations came from the Victorson et al study?
- Active control groups
- Populations other than white english speakers
- Determine best mode of delivery
What are the summary of knowledge points for
cancer?
- Substantial fit on MBI’s and cancer
- Improving quality (active controls)
- MBI’s consistently lead to better outcomes right after intervention
- More researg on psychosocial vs. biological outcomes