• Intervention
    How do therapeutic vegetarian diets compare to other types of therapeutic diets in terms of attrition rate in adults?
    • Conclusion

      Results are mixed comparing attrition rates for therapeutic vegetarian and therapeutic omnivorous diets in adults. Therapeutic vegetarian diets appear to perform as well and possibly better than omnivorous diets in terms of attrition rate, provided that patients receive appropriate dietary support.

    • Grade: I
      • 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.
    What are some factors associated with attrition rates in studies of adults using vegetarian diets for nutrition therapy?
    • Conclusion

      Of the study characteristics examined, disease or condition treated, restrictiveness of the vegetarian diet and level of subject/patient support appeared to be associated with study attrition rates. Attrition rates for obesity treatment with vegetarian diets were higher than that for other diseases. Attrition rates were lower for vegans compared to other types of vegetarian diets. Subject/patient support (e.g., weekly meetings, supplying foods, cooking demonstrations and so on) contributed to greater patient/subject retention.

    • Grade: I
      • 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.