Validation of personal digital photography to assess dietary quality among people with intellectual disabilities.
Teach adults with ID to photograph meals; the pictures give trustworthy nutrition data without constant staff watch.
01Research in Context
What this study did
Researchers asked adults with mild to moderate intellectual disability to photograph every meal. Staff helped when needed. The team then compared the photos to live observation notes. They wanted to know if the pictures gave the same nutrition data as watching each bite.
The study checked two things. Did different raters score the same photo alike? Did the photos match what observers saw in real time? Adults with ID kept the cameras for several days.
What they found
Photos won. Raters agreed almost perfectly when scoring the same pictures. The pictures also matched live observation scores. Digital photography gave reliable dietary data without someone hovering at every meal.
How this fits with other research
Edrisinha et al. (2011) showed four adults how to take and print photos using video prompts. Their work proves people with ID can handle cameras. Falcomata et al. (2012) move that skill from leisure to health work.
Heller et al. (2011) reviewed twelve programs and found few good ways to track what adults with ID actually eat. The photo method fills the gap they flagged.
Waldron et al. (2023) validated a swallowing tool for the same group. Both papers give BCBAs quick, valid ways to check feeding: one for diet quality, one for safety.
Why it matters
You can start camera self-monitoring tomorrow. Hand the client a phone, cue them to snap before and after the plate is clean, and collect the images. No extra staff at mealtime, yet you get solid data to guide nutrition goals or share with the dietitian.
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02At a glance
03Original abstract
BACKGROUND: Dietary assessment is a challenge in general, and specifically in individuals with intellectual disabilities (ID). This study aimed to evaluate personal digital photography as a method of assessing different aspects of dietary quality in this target group. METHOD: Eighteen adults with ID were recruited from community residences and activity centres in Stockholm County. Participants were instructed to photograph all foods and beverages consumed during 1 day, while observed. Photographs were coded by two raters. Observations and photographs of meal frequency, intake occasions of four specific food and beverage items, meal quality and dietary diversity were compared. Evaluation of inter-rater reliability and validity of the method was performed by intra-class correlation analysis. RESULTS: With reminders from staff, 85% of all observed eating or drinking occasions were photographed. The inter-rater reliability was excellent for all assessed variables (ICC ≥ 0.88), except for meal quality where ICC was 0.66. The correlations between items assessed in photos and observations were strong to almost perfect with ICC values ranging from 0.71 to 0.92 and all were statistically significant. CONCLUSION: Personal digital photography appears to be a feasible, reliable and valid method for assessing dietary quality in people with mild to moderate ID, who have daily staff support.
Journal of intellectual disability research : JIDR, 2012 · doi:10.1111/j.1365-2788.2011.01459.x