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Table 2 Feasibility measures and exploratory outcomes [15]

From: An app-, web- and social support-based weight loss intervention for adults with obesity: the ‘HelpMeDoIt!’ feasibility randomised controlled trial

Measure

Method of measurement

Time-point

Demographics

 Case Report Form: gender, age, socioeconomic status, employment and education status, current weight loss status, current health status, current computer and phone use

Baseline and 12 months

Feasibility measures (reflecting progression criteria)

 Recruitment

Sample size and rate of recruitment, sources of recruitment

Post baseline

 Randomisation

Interviews with participants and insight from study team

6 months

 Retention

Retention rates for data collection at 12 months follow-up

12 months

 Feasibility of app/website (intervention)

Interviews with participants, interviews with helpers, app and website usage statistics, USE [20] questionnaire

6 and 12 months, 12 months, 12 months and 12 months

 Data collection

Rates of completion for different measures

Baseline and 12 months

Exploratory primary outcomes

 BMI (kg/m2)

Physical measurement of height (m) and weight (kg)

Baseline and 12 months

 Diet

DINE questionnaire [21] (via telephone), 4 days of 24-h dietary recall

Baseline and 12 months

 Physical activity

7 day accelerometry [22], 7 day Physical Activity Recall Questionnaire [23]

Baseline and 12 months

Secondary outcomes

 Anthropometric changes

Waist and hip circumference (cm)

Baseline and 12 months

 Health-related quality of life

EQ5D 3 -L questionnaire [24], ICECAP A scale [25]

Baseline and 12 months

 Mental health

General Health Questionnaire (GHQ12) [26]

Baseline and 12 months

 NHS resource use and participant-borne costs

Specially designed resource use questionnaire

Baseline and 12 months

 Social support

Exercise and Eating Habits Social Support Scales [27]

Baseline and 12 months

 Self-efficacy

Weight [28] and Exercise Efficacy Lifestyle Scales [29, 30]

Baseline and 12 months

 Motivation

Treatment Self-Regulation Questionnaire [31]

Baseline and 12 months

 Smoking use

Heaviness of Smoking Index (HIS) [32]

12 months

 Alcohol use

Alcohol Use Disorders Identification Test (AUDIT-C) [33]

12 months