Minimum required reporting sheet for standardised and transparent data sharing
| Target population | Description | Reporting |
| Sampling method | Random, convenient, etc. | |
| Distribution of sex | ♂=n/♀=n | |
| Age | Mean±SD and range (years) | |
| BMI | Mean±SD and range (kg/m²) | |
| Sample size | Provide the no and explain how the sample size was chosen | |
| Health condition (where relevant) | Provide detailed description of cohort with atypical gait characteristics | |
| Criterion measure | ||
| Video camera with multiple observer (≥2) or equivalent* | Video: Model and brand OR Equivalent: Model, brand and published measurement error | |
| Placement | Actual placement of camera or equivalent | |
| Index device | ||
| Placement | Manufacturer’s instructions and actual placement | |
| Testing protocol | ||
| Type of protocol | Laboratory, semifree-living and/or free-living | |
| Type of trial | List the components of the recommended protocol evaluated (eg, laboratory 3 min walk test, 3 min zig-zag walk test etc) | |
| Duration | Duration of each trial | |
| Contextual factors | Where the testing took place, weather conditions, time of year | |
| Processing | ||
| Criterion measure processing | Video: step definition; methods for reviewing video; number of raters OR Equivalent: processing method for equivalent criterion | |
| Index measure processing | Detail methods if end-user data is processed (eg, excluded data etc.) | |
| Epochs for analysis | In seconds (where relevant) | |
| Index and criterion synchronisation | Method used for synchronising step data from index and criterion measures | |
| Statistical Analysis assessment | ||
| Mean difference or mean relative difference Bland-Altman LoA | Detail the LoA for each trial | |
| Least products regression of the differences against the means | Detail the presence of any systematic or proportional bias for each trial | |
| MAPE | Detail the MAPE for each trial | |
| Intraclass correlation coefficient | Detail the intra-class correlation coefficient and 95% CI for the 2×1 min treadmill test |
*Any device or method which has been demonstrated to possess less than 5% measurement error using the laboratory, semi free-living, and free-living validation protocols detailed below. Additionally, this should be specific to the population of interest. For the case of free-living validation, the INTERLIVE network is aware that video recording and ‘manual’ step counting by two independent evaluators over ≥24 hours recording period (a 1-week recording period (minimum 3–4 complete days) is optimal to capture interday and weekday-weekend variation) is extremely costly in time and resources and therefore likely not feasible for many. Therefore, we feel that this field needs to move forward, developing and validating alternative methods such as insole sensors that after validation and cross-validation could be used as a new and more feasible gold-standard method for free-living validation protocols.
BMI, body mass index; INTERLIVE®, Intelligent Health and Well-Being Network of Physical Activity Assessment; LoA, limits of agreement; MAPE, mean absolute percentage error.;