Table 1

Summary of the participant and study characteristics of included publications
Participant characteristicsa Mean (standard deviation) for self-efficacy analysis Mean (standard deviation) for physical activity analysis
Mean age in years of participants (range 28–77 years)a 49.1 (9.5) 50.0 (10.0)
Mean BMI of participants (range 30–42)a, b 34.5 (3.7) 34.5 (3.9)
Mean percentage of females per study (range 0-100%)a, b 79.2% (29.7) 73.1% (32.7)
Mean percentage of white participants per study (range 0-100%)a, b 59.6% (31.3) 59.0% (36.3)
Study designc Frequencies for self-efficacy analysis Frequencies for physical activity analysis
Controlled trials 25 18
Pre-post design 36 24
Type of self-efficacy measuredd Frequencies for self-efficacy analysis Frequencies for physical activity analysis
Task self-efficacy 9 N/A
Barrier self-efficacy 47 N/A
Combined barrier and task self-efficacy 1 N/A
Other/unclear 3 N/A

a Data on age, exact BMI, gender and ethnicity was not provided by all studies.

b This is the range for both the self-efficacy and physical activity studies.

c This data is for the statistical analyses conducted, some of the studies were RCT’s but were analysed as pre-post studies.

d One study measured perceived behavioural control, not self-efficacy [68].

Olander et al.

Olander et al. International Journal of Behavioral Nutrition and Physical Activity 2013 10:29   doi:10.1186/1479-5868-10-29

Open Data