Trial Outcomes & Findings for A Walking Intervention Through Text Messaging (NCT NCT02053259)

Results Overview

Given this study used a 2 condition (adaptive vs. static goals) x 2 condition (immediate vs. delayed financial reinforcement) randomized factorial design we report main effects for each condition. Sample sizes for main effects will be 96 participants for each comparison (Adaptive vs. Static goals or Immediate vs. Delayed Reinforcement) as the other condition. Consistent with proper analyses of factorial designs, main effects for the goal setting conditions pool participants across reinforcement conditions, and main effects for reinforcement conditions pool participants across goal setting conditions.

Recruitment status

COMPLETED

Study phase

NA

Target enrollment

96 participants

Primary outcome timeframe

Daily for 4 months

Results posted on

2021-09-22

Participant Flow

Participant milestones

Participant milestones
Measure	Adaptive Physical Activity Goals With Immediate Reinforcement Adaptive Physical Activity Goals with Immediate Reinforcement	Adaptive Physical Activity Goals With Delayed Reinforcement Adaptive Physical Activity Goals with Delayed Reinforcement	Static Physical Activity Goals With Immediate Reinforcement Static Physical Activity Goals with Immediate Reinforcement	Static Physical Activity Goals With Delayed Reinforcement Static Physical Activity Goals with Delayed Reinforcement
Overall Study STARTED	25	24	24	23
Overall Study COMPLETED	25	24	24	23
Overall Study NOT COMPLETED	0	0	0	0

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

A Walking Intervention Through Text Messaging

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure	Arm 1 n=25 Participants Adaptive with Immediate Rewards	Arm 2 n=24 Participants Adaptive with Delayed Rewards	Arm 3 n=24 Participants Static with Immediate Rewards	Arm 4 n=23 Participants Static with Delayed Non-Contingent Rewards	Total n=96 Participants Total of all reporting groups
Age, Continuous	41.0 years STANDARD_DEVIATION 10.16 • n=5 Participants	44.5 years STANDARD_DEVIATION 10.70 • n=7 Participants	38.4 years STANDARD_DEVIATION 8.22 • n=5 Participants	40.3 years STANDARD_DEVIATION 7.91 • n=4 Participants	41.0 years STANDARD_DEVIATION 9.46 • n=21 Participants
Sex: Female, Male Female	22 Participants n=5 Participants	17 Participants n=7 Participants	19 Participants n=5 Participants	16 Participants n=4 Participants	74 Participants n=21 Participants
Sex: Female, Male Male	3 Participants n=5 Participants	7 Participants n=7 Participants	5 Participants n=5 Participants	7 Participants n=4 Participants	22 Participants n=21 Participants
Ethnicity (NIH/OMB) Hispanic or Latino	6 Participants n=5 Participants	4 Participants n=7 Participants	6 Participants n=5 Participants	3 Participants n=4 Participants	19 Participants n=21 Participants
Ethnicity (NIH/OMB) Not Hispanic or Latino	19 Participants n=5 Participants	20 Participants n=7 Participants	18 Participants n=5 Participants	20 Participants n=4 Participants	77 Participants n=21 Participants
Ethnicity (NIH/OMB) Unknown or Not Reported	0 Participants n=5 Participants	0 Participants n=7 Participants	0 Participants n=5 Participants	0 Participants n=4 Participants	0 Participants n=21 Participants
Region of Enrollment United States	25 participants n=5 Participants	24 participants n=7 Participants	24 participants n=5 Participants	23 participants n=4 Participants	96 participants n=21 Participants

PRIMARY outcome

Timeframe: Daily for 4 months

Population: 2x2 factorial design main effects reported. Main effects for goal setting (n=49 for adaptive vs. n=47 for static) and reinforcement conditions (n=49 for immediate reinforcement vs. n=47 for delayed, non-contingent reinforcement).

Given this study used a 2 condition (adaptive vs. static goals) x 2 condition (immediate vs. delayed financial reinforcement) randomized factorial design we report main effects for each condition. Sample sizes for main effects will be 96 participants for each comparison (Adaptive vs. Static goals or Immediate vs. Delayed Reinforcement) as the other condition. Consistent with proper analyses of factorial designs, main effects for the goal setting conditions pool participants across reinforcement conditions, and main effects for reinforcement conditions pool participants across goal setting conditions.