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Associations between variety of fruits and vegetables consumed, diet quality, and sociodemographic factors among 8th and 11th grade adolescents in Texas.

OBJECTIVE
To examine demographic and dietary correlates of consumption of a variety of fruits and vegetables (FV) among Texas adolescents. Different types of FV are needed for adequate dietary intake of vitamins and phytochemicals for proper development and functioning throughout the lifespan.


DESIGN
Cross-sectional analysis from the Texas Surveillance of Physical Activity and Nutrition (Texas SPAN) data comparing consumption of a variety of fruit and vegetables by gender, race/ethnicity, and region (Texas-Mexico border/non-border).


SETTING
Middle, high schools in Texas.


PARTICIPANTS
8th, 11th grade Texas adolescents (n=9,056 representing N=659,288) mean age 14.8 years.


RESULTS
Within this sample, mean fruit and vegetable variety scores (0-7) ranged from 2.47-2.65. Boys consumed a significantly greater variety of fruit than girls (m=1.12 compared to 1.04). Adolescents in non-border regions consumed a greater variety of vegetables and FV compared to those in border regions. FV variety was associated with healthier eating in the full sample, particularly in the highest Socioeconomic Status (SES) tertile. Within the highest SES tertile, a one-unit increase in variety of fruit, vegetable, and FV was associated with significant increases (p<0.001) in a healthy eating measure, the SPAN Healthy Eating Index: Fruit variety (β=1.33, SE=.29), Vegetable variety (β=0.90, SE=0.28), and FV Variety (β=.81, SE=0.19).


CONCLUSIONS
Consumption of a greater variety of FV appears to be associated with a healthier overall diet. Associations of FV variety with healthy eating were most significant in the highest SES tertile. These findings support the need to further examine consuming a variety of FV within healthy eating behavior.