Internal consistency for PAQ-A
| Variables | Cronbach’s coefficient, α | Correlation (item-total) |
| PAQ-A total | 0.93 | – |
| Reliability with items (Q1–Q8) individually removed | ||
| Q1. Spare-time activity: sports | 0.93 | 0.43 |
| Q2. Activity during physical education classes | 0.93 | 0.49 |
| Q3. Lunchtime activity | 0.92 | 0.71 |
| Q4. After-school activity | 0.92 | 0.74 |
| Q5. Evening activity | 0.91 | 0.84 |
| Q6. Weekend activity | 0.91 | 0.81 |
| Q7. Activity frequency during the last 7 days | 0.91 | 0.85 |
| Q8. Activity frequency during each day last week | 0.92 | 0.74 |
PAQ-A, Physical Activity Questionnaire for Adolescents; Q, question.