Table 1.
Eligibility criteria for a systematic review and meta-analysis examining the effect of phosphate-specific diet therapy by a dietitian on phosphate levels
| Criteria | Include | Exclude |
|---|---|---|
| Population | Adults ≥18 yr of age | Population includes individuals <18 yr of age |
| Human | ||
| With CKD | At risk for CKD, cancer, or other terminal/serious conditions | |
| Stages 2–5 | ||
| Pre- and postdialysis | ||
| With or without diabetes | ||
| Pre- and post-transplant | ||
| Intervention | Diet therapy provided by a dietitian or international equivalent | Dietary interventions not delivered by a dietitian or international equivalent |
| Diet therapy focused on reducing phosphate levels | Interventions comparing types of oral nutrition supplements or intradialytic parenteral nutrition, but no other differences in dietitian care between groups | |
| Comparison | Must have a comparison group that is either | Has no comparison group |
| Not receiving an intervention from a dietitian | Receives same intervention from a dietitian as the intervention group (e.g., a different aspect of CKD care is altered, but not care from a diet therapy) | |
| Is receiving a different intervention from a dietitian (e.g., education/counseling for low protein diet from and dietitian versus standard care from a dietitian) | Supplement study in which the supplement changes but counseling from a dietitian is not different between groups | |
| Study design | Randomized controlled trials, nonrandomized controlled trials, quasi-experimental trials; systematic reviews and guidelines will be reviewed for relevant references | Observational studies, retrospective studies, noncontrolled trials, case reports, narrative reviews |
| Outcomes | Primary outcomes of interest/goals of diet therapy | Outcomes that are not primary outcomes of interest or goals of diet therapy |
| Setting | Clinical or outpatient | No limits |
| Size of study group | ≥6 participants in each arm | <6 participants in each arm |
| Study drop-out rate | No limits | No limits |
| Yr range | January 1, 2000 to search date of November 23, 2019 | Before 2000 or after the search date of November 23, 2019 |
| Language | English | Not in English |