Four studies show that weight loss was maintained with continued consumption of one or more single serving portion sized meals per day as part of a weight management program for six to 12 months in overweight/obese adults (aged 19+ years and ethnically diverse). Without a planned weight maintenance phase during the weight management program, weight loss may or may not be maintained over 12-18 months. Additional studies in this area are needed.
 

• Grade I means there is Good/Strong evidence supporting the statement;
• Grade II is Fair;
• Grade III is Limited/Weak;
• Grade IV is Expert Opinion Only;
• Grade V is Not Assignable.
• High (A) means we are very confident that the true effect lies close to that of the estimate of the effect;
• Moderate (B) means we are moderately confident in the effect estimate;
• Low (C) means our confidence in the effect estimate is limited;
• Very Low (D) means we have very little confidence in the effect estimate.
• Ungraded means a grade is not assignable.

There were no studies identified to address consumption of single serving portion sized meals on weight maintenance in overweight/obese children and adolescents (aged 6-18 years).

• Grade I means there is Good/Strong evidence supporting the statement;
• Grade II is Fair;
• Grade III is Limited/Weak;
• Grade IV is Expert Opinion Only;
• Grade V is Not Assignable.
• High (A) means we are very confident that the true effect lies close to that of the estimate of the effect;
• Moderate (B) means we are moderately confident in the effect estimate;
• Low (C) means our confidence in the effect estimate is limited;
• Very Low (D) means we have very little confidence in the effect estimate.
• Ungraded means a grade is not assignable.