Presentation on theme: "KATHERINE WILLIAMSON PADILLA 12/16/2010 BAY BRIDGE TRAINING CENTER Effects of Diet and Exercise on the Mental Health of Adolescents in California."— Presentation transcript:
KATHERINE WILLIAMSON PADILLA 12/16/2010 BAY BRIDGE TRAINING CENTER Effects of Diet and Exercise on the Mental Health of Adolescents in California
Agenda Background Data Sources & Collection Method Univariate Analysis (1) Multivariate Analysis (2) Qualitative Analysis (3) Conclusion Data shows kids who eat more fruits and vegetables and engage in physical activity are less likely to experience mental health issues. Socioeconomic status, however, plays a larger role.
Background Adolescence is key! Causes of Mental Illness Research on Adults..but what about kids? Why is this important? Clayton SL, Brindis, CD, Hamor JA, Raiden-Wright H, Fong, C. (2000). Investing in Adolescent Health: A Social Imperative for California s Future. San Francisco, CA: University of California, San Francisco. National Adolescent Health Information Center.
Data Collection RDD telephone survey of land / cell phone lines in CA 41 single county strata & 3 multi-county strata of 17 counties 1 Adult & 1 Adolescent N = 3,638 adolescents
Variables & Operational Measures Unit of Analysis: Adolescents in the State of CA Dependent Variable: Mental Health Status as measured by feelings of depression within the last 30 days Independent Variables: Eating & Exercise habits
Univariate Analysis (1) Is mental health normally distributed? (No!) 1 = All of the Time 2 = Most of the Time 3 = Some of the Time 4 = Not very much of the Time 5 = Not at All.5% = All of the Time 77.3% = Not at All Skewness = -2.303
Univariate Analysis Are good eating habits normally distributed? (No!) 1 = Yes 2 = No 21.8% = Yes 78.2= No Skewness = -.1.369
Univariate (1) Analysis Are good exercise habits normally distributed? (Somewhat)
Multivariate Analysis (2) R squared =.015 There is a correlation, but its weak ….. Regression Analysis reveals that more fruits/veggies & more exercise =less depression What effects how much exercise/fruits/veggies a kid gets? Maybe SES…
Multivariate Analysis (2) R squared for fruits/vegs & exercise & depression =.015 R squared for SES & depression =.020 R squared for SES & exercise =.023 *knowing exercise only increased predictive value by 3% (but forecast accuracy does increase by 50% more than knowing just fruits/vegs)...SES is most significant Crosstab of SES & depression reveals a correlation- 81% of kids in top SES class not at all depressed compared with 61% of kids in the bottom SES (4% vs. 11% for sometimes depressed) Regression of fruits/vegs & activity has less predictive value than SES alone
Qualitative Data (3) 7 question, open-ended survey Example Questions -- How do life style choices like eating and exercise habits influence the mental health of adolescents? Drawing on experiences from your patients, have you noticed any correlation between lack of exercise and/or unhealthful eating habits and poor mental health? School Psychologist School Nurse Public Health Nurse Special Education Teacher School Board Member
Qualitative Analysis (3) Response Category DescriptionAssigned CodeFrequencyPercentage of Total Responses Poor eating habits/lack of exercise = depression 1I I I37% Healthy eating/consistent exercise = positive attitude & better mental health 2I 25% Poor eating habits/lack of exercise = social problem 3I 25% Influence student perception & body image 4I12.5% Total899.5% Question 1: How do life style choices like eating and exercise habits influence the mental health of teens?
Qualitative Analysis Highlights 42% Of total responses indicated diet & exercise make adolescents feel better (endorphins) when dealing with depression 37% said higher levels of diet/exercise led to improved self-esteem in kids
Conclusion There is a link…but its weak Qualitative Data Confirms SES is more predictive Why? What can I take away from this?