Table 4.
Intraclass correlation coefficients and internal consistency of PPAQ-SRB 1 measured by Cronbach’s α coefficient.
| Factor | Number of Questions | Cronbach α N = 150 |
ICC Coefficient 2 N = 30 |
95%CI |
|---|---|---|---|---|
| Factor 1: Caregiving activity | 7 | 0.919 | 0.930 | 0.852–0.967 |
| Factor 2: Transport and walking activity | 6 | 0.757 | 0.773 | 0.523–0.892 |
| Factor 3: Household activity | 5 | 0.752 | 0.768 | 0.512–0.890 |
| Factor 4: Occupational activity | 5 | 0.815 | 0.815 | 0.611–0.912 |
| Factor 5: Sports/exercise activity | 4 | 0.867 | 0.841 | 0.665–0.924 |
| Factor 6: Inactivity | 3 | 0.784 | 0.798 | 0.575–0.904 |
1 PPAQ-SRB = Pregnancy Physical Activity Questionnaire-Serbian version; 2 ICC = Interclass correlation coefficient (95% confidence interval).