10.17037/DATA.00004496
Data collated as part of a meta-analysis to investigate effectiveness of mobile app-based interventions in facilitating behaviour change towards healthier and more sustainable diets. It contains variables on study details, sample characteristics, as well as baseline and post-intervention values of food consumption.
The data were acquired from previously published interventional studies. We systematically searched academic databases and grey literature and included 21 studies in the systematic review. Data extraction forms were set up on Covidence and MS Excel and data extraction was conducted by two researchers.
The following variables are contained within the App intervention dataset.
| Variable Name | Variable Label | Answer Label | Answer Code | Variable Type |
| Author_year | Publication first author and year of publication. | String | ||
| Specific_app | The specificity of the apps - Specific or General. | Numeric | ||
| Solely targeted the measured food group | Specific | |||
| Targeted other food groups | General | |||
| Dietary_measure_cat | The dietary measurement method used. | Numeric | ||
| 24h recall or food frequency questionnaire | 0 | |||
| Single question or not reported | 1 | |||
| PPT_type | Participant type risk factor recruitment. | String | ||
| No risk factor - the participants were not recruited based on a risk factor for health | 0 | |||
| Risk factor - the participants were recruited based on a known risk factor for health | 1 | |||
| Dietary_guidelines | Dietary guidelines. | String | ||
| Met | Met | |||
| Not met | Not met | |||
| Baseline_intake | The number of portions of that food group that were reported at baseline. | Numeric | ||
| Transparency_score | A variable created to reflect reporting transparency and study quality taking items from three previous checklists. Scores ranged from Single question or not reported-26 for RCTs and Single question or not reported-23 for non-RCTs, given the additional three items relating to blinding for RCTs. Higher scores indicated higher quality. Percentage of fulfilled criteria was obtained by dividing scores by the maximum score and multiplying by 100. | Numeric | ||
| Int_duration | The intervention duration in weeks. | Numeric | ||
| FU | Time in weeks from baseline of the final follow-up measurement. | Numeric | ||
| Age | Average age of the study sample. | Numeric | ||
| Sex | Percentage of female participants in the study sample. | Numeric | ||
| Education_level | Study participants education level or number of years in education (% bachelor degree or above, number of years). | String | ||
| NR | No response | |||
| Ethnicity | Percentage of study participants of white ethnicity. | Numeric | ||
| NR | No response | |||
| S_S | Did the intervention include the Behaviour Change Technique "Social Support"? | Numeric | ||
| No social support | 0 | |||
| Social support | 1 | |||
| S_K | Did the intervention include the Behaviour Change Technique "Shaping Knowledge"? | Numeric | ||
| No shaping knowledge | 0 | |||
| Shaping knowledge | 1 | |||
| N_C | Did the intervention include the Behaviour Change Technique "Natural Consequences"? | Numeric | ||
| No natural consequences | 0 | |||
| Natural consequences | 1 | |||
| C_B | Dod the intervention include the Behaviour Change Technique "Comparison of Behaviour"? | Numeric | ||
| No comparison of behaviour | 0 | |||
| Comparison of behaviour | 1 | |||
| Info | Did the intervention include the delivery technique "Information Delivery"? | Numeric | ||
| No information delivery | 0 | |||
| Information Delivery | 1 | |||
| Messag | Did the intervention included the delivery technique "Messaging"? | Numeric | ||
| No messaging | 0 | |||
| Messaging | 1 | |||
| Media | Did the intervention include the delivery technique "Media"? | Numeric | ||
| No media | 0 | |||
| Media | 1 | |||
| Personal | Did the intervention include the delivery technique "Personalisation"? | Numeric | ||
| No personalisation | 0 | |||
| Personalisation | 1 | |||
| Within_between | Comparison method used | Numeric | ||
| Between participants (intervention-control) | 0 | |||
| Within participants (before-after) | 1 | |||
| Outcome_category_6 | The outcome categories of food intake | String | ||
| Fruit and vegetables | Fruit and vegetables | |||
| Legumes | Legumes | |||
| Dairy | Dairy | |||
| Meat | Meat | |||
| Mean_base_con | Mean baseline value for the control in pure form. | Numeric | ||
| mean.c | Mean baseline value for the control in the standard portion/day form. | Numeric | ||
| SD_base_con | Standard deviation for the mean baseline value for the control in pure form. | Numeric | ||
| sd.c | Standard deviation for the mean baseline value for the control in the standard form. | Numeric | ||
| SE_base_con | Standard error for the mean baseline value for the control in pure form. | Numeric | ||
| se.c | Standard error for the mean baseline value for the control in the standard form. | Numeric | ||
| n.c | Sample size for the control. | Numeric | ||
| Mean_exp | Mean baseline value for the intervention group in pure form. | Numeric | ||
| mean.e | Mean baseline value for the intervention group in the standard portion/day form. | Numeric | ||
| SD_exp | Standard deviation for the mean baseline value for the intervention group in pure form. | Numeric | ||
| sd.e | Standard deviation for the mean baseline value for the intervention group in the standard form. | Numeric | ||
| SE_exp | Standard error for the mean baseline value for the intervention group in pure form. | Numeric | ||
| se.e | Standard error for the mean baseline value for the intervention group in the standard form. | Numeric | ||
| n.e | Sample size for the intervention group. | Numeric | ||
| Recruited.c | Sample size recruited in the control group. | Numeric | ||
| Recruited.e | Sample size recruited in the intervention group. | Numeric | ||
| Recruited.t | Sample size recruited in total. | Numeric | ||
| FU.c | Sample size analysed at follow-up in the control group. | Numeric | ||
| FU.e | Sample size analysed at follow-up in the experimental group. | Numeric | ||
| FU.t | Sample size analysed at follow-up in total. | Numeric | ||
| Retention | Retention rate (% of participants analysed at follow-up out of the recruited sample). | Numeric | ||
| Ab_diff | Absolute difference between the intervention and control groups. | Numeric | ||
| LL | Lower limit of the absolute difference. | Numeric | ||
| UL | Upper limit of the absolute difference. | Numeric | ||
| sei | Standard error of the absolute difference. | Numeric |