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Table 1 Behavioral, Psychosocial, and Environmental Predictors and Related Assessment Methods

From: Multi-sensor ecological momentary assessment of behavioral and psychosocial predictors of weight loss following bariatric surgery: study protocol for a multicenter prospective longitudinal evaluation

Predictor Assessment Method
Physical activity
 Level (light-vigorous), duration ActiGraph Link
 Total & active energy expenditure (kcal/d) ActiGraph Link
 Steps and total distance/day ActiGraph Link
 Types of PA EMA
 PA barriers and intentions EMA
Sedentary behavior
 Total minutes/day and % time ActiGraph Link
 Types of sedentary behavior EMA
Eating behavior
 Frequency, timing, duration, rate, and volume Bite Counter
 Total energy intake, diet composition, & quality Dietary Recall
 Hunger and satiety EMA
 Appetite/motivation to eat EMA
 Binge eating & loss of control EMA
 Planned eating EMA
 Grazing EMA
 Dietary restraint and disinhibition EMA
Behavioral complications EMA
Sleep habits (total time and efficiency) ActiGraph Link
Other adherence behaviors
 Self-weighing EMA
 Attendance at clinical follow-ups Chart Review
 Adherence to medications/vitamins EMA
Psychosocial factors
 Mood, stress, energy, fatigue EMA
 Health locus of control EMA
 Social support EMA
 Outcomes expectations Questionnaires
 Bariatric surgery motivation & satisfaction Questionnaires
 Understanding of behavioral recommendations Questionnaires
Environmental factors
 Exposure to and availability of palatable foods EMA
 Cues for eating, activity, and sedentariness EMA
 Eating location/setting & behavior/proximity of others EMA