Table 1.
Overview of measures.
| Instrument/Measurement | Source of data | Sample | |
|---|---|---|---|
| Nutritional status (outcomes) | |||
| Anthropometric measurements | |||
| Body mass index (BM) | Kg/m2; weight and height assessed using digital scale SOEHNLE 63850 PWD Style Sense Compact 100 and SECA measuring tape | Interview | All |
| Waist to hip ratio (WHR) | Abdominal girth/hip girth assessed using SECA measuring tape | Interview | All |
| Nutritional risk scores | |||
| Score 1 | Nutritional risk screening (NRS) including modified Global Assessment of Functioning Scale (m-GAF) | Interview | All |
| Score 2 | Mini Nutritional Assessment-Short Form (MNA-SF) including an adapted version | Interview | All |
| Score 3 | NutriMental Screener | Interview | All |
| Nutrition-related diseases | Self-report (e.g., diabetes, celiac disease, food allergy or intolerance) | Interview | All |
| Subjective evaluation of nutritional status | Single question | Interview | All |
| Biochemical parameters | Laboratory results, such as lipid profiles, electrolytes, liver parameters, proteins, vitamins and trace elements | CIS | Patients |
| Weight management | Self-report (e.g., weight changes, intentional restriction of food intake) | Interview | All |
| Eating behavior (outcomes) | |||
| Food intake and diet quality | 16 food frequency questions and additional questions regarding eating behavior | Interview | All |
| Knowledge and skills (outcomes) | |||
| Practical nutrition knowledge | PKB-7 scale | Interview | All |
| Cooking and food skills | |||
| Sum score 1 | Cooking and food skills | Interview | All |
| Sum score 2 | Cooking and food activities | Interview | All |
| Nutrition literacy | Single question | Interview | All |
| Personality, attitudes and feelings (outcomes) | |||
| Personality: Consciousness | Big-Five-Inventory-short form (BFI-K) | Interview | All |
| Implicit theories on mental health: Incremental beliefs | Adapted scale of implicit theories on mental health | Interview | All |
| Feelings toward nutrition: Negative to positive | Free and spontaneous associations on nutrition | Interview | All |
| Mental condition (predictors) | |||
| Psychiatric disorders and treatment | ICD-10 diagnoses, self-reported treatment history | Interview, CIS | Patients |
| Objective assessment of severity of symptoms and functioning | Health of the Nation Outcome Scales (HoNOS), m-GAF | CIS | Patients |
| Subjective assessment of severity of symptoms and functioning | 9-item Symptom-Checklist (SCL-K-9), 9-item Patient Health Questionnaire (PHQ-9) | Interview | All |
| Control measures | |||
| Medication | Prescribed medications and nutritional supplements | Interview, CIS | All |
| Personal variables | Self-reported data (gender, age, education, housing situation, source of income, physical activity, smoking status and previous nutrition counseling) | Interview | All |
CIS, Clinical information system.