Table 2.
Distributions of the Final Study Items and Variables Using the 2003 U.S. Trial of Activity for Adolescent Girls Dataset
| Variables and Items | N (N Missing) |
Mean (SD) | Skewness (SE) |
Kurtosis (SE) |
Min | Max |
|---|---|---|---|---|---|---|
| Physical Activity | ||||||
| Average daily minutes of moderate-to-vigorous physical activity | 1721 (0) |
23.91 (12.05) |
1.29 (0.06) |
2.42 (0.12) |
2.61 | 87.78 |
| Physical Activity Enjoyment (removed items 4 & 5)a | ||||||
| 1. When I am active I feel bored | 1718 (3) |
4.22 (1.16) |
−1.38 (0.06) |
0.80 (0.12) |
1 | 5 |
| 2. When I am active I dislike it | 1712 (9) |
4.34 (1.02) |
−1.56 (0.06) |
1.63 (0.12) |
1 | 5 |
| 3. When I am active it’s no fun at all | 1715 (6) |
4.49 (0.98) |
−2.06 (0.06) |
3.55 (0.12) |
1 | 5 |
| 6. When I am active it’s not at all interesting | 1699 (22) |
4.45 (0.98) |
−1.91 (0.06) |
2.95 (0.12) |
1 | 5 |
| 7. When I am active I feel I would rather be doing something else | 1716 (5) |
4.04 (1.24) |
−1.10 (0.06) |
0.03 (0.12) |
1 | 5 |
| Social support (factors divided by source of support: family and friends; removed item 1)b | ||||||
| 2. How often do your friends encourage you to do the activity (friends) | 1679 (42) |
2.80 (1.15) |
−0.04 (0.06) |
−0.59 (0.12) |
1 | 5 |
| 3. How often do your friends do the activity with you (friends) | 1679 (42) |
3.31 (1.11) |
−0.39 (0.06) |
−0.24 (0.12) |
1 | 5 |
| 4. How often do your friends tell you, you are doing well in activities (friends) | 1663 (58) |
3.08 (1.24) |
−0.19 (0.06) |
−0.74 (0.12) |
1 | 5 |
| 5. How often do family members encourage you to do PA(family) | 1672 (49) |
3.39 (1.14) |
−0.37 (0.06) |
−0.47 (0.12) |
1 | 5 |
| 6. How often do family members do the activity with you (family) | 1663 (58) |
3.03 (1.08) |
−0.15 (0.06) |
−0.30 (0.12) |
1 | 5 |
| 7. How often do family members do they provide transport to a place of recreation (family) | 1661 (60) |
3.51 (1.16) |
−0.46 (0.06) |
−0.36 (0.12) |
1 | 5 |
| 8. How often do family members watch you participate in activity (family) | 1661 (60) |
3.36 (1.17) |
−0.40 (0.06) |
−0.44 (0.12) |
1 | 5 |
| 9. How often do family members tell you, you are doing well in activities (family) | 1665 (56) |
3.68 (1.21) |
−0.63 (0.06) |
−0.45 (0.12) |
1 | 5 |
| School Climate (factors divided by source: teachers and boys; removed item 3)c | ||||||
| 1. In my school PE teachers think boy should be more active than girls (teachers) | 1715 (6) |
3.92 (1.30) |
−0.86 (0.06) |
−0.50 (0.12) |
1 | 5 |
| 2. In my school other teachers think boys should be more active than girls (teachers) | 1711 (10) |
3.96 (1.23) |
−0.87 (0.06) |
−0.37 (0.12) |
1 | 5 |
| 4. In my school boys make rude comments about girls who are active (boys) | 1698 (23) |
3.11 (1.44) |
−0.04 (0.06) |
−1.34 (0.12) |
1 | 5 |
| 5. In my school being active around boys makes me uncomfortable (boys) | 1708 (13) |
3.73 (1.38) |
−0.65 (0.06) |
−0.93 (0.12) |
1 | 5 |
| 6. In my school boys stare too much at girls being active (boys) | 2716 (5) |
3.07 (1.45) |
−0.04 (0.06) |
−1.34 (0.12) |
1 | 5 |
| Neighborhood environment (removed items 6 & 7)d | ||||||
| 1. There are many places I like to go within walking distance of home | 1716 (5) |
3.60 (1.33) |
−0.69 (0.06) |
−0.66 (0.12) |
1 | 5 |
| 2. There are sidewalks on most of the streets in my neighborhood | 1713 (8) |
3.46 (1.65) |
−0.49 (0.06) |
−1.44 (0.12) |
1 | 5 |
| 3. There are bike or walking trails in my neighborhood | 1706 (15) |
3.18 (1.59) |
−0.22 (0.06) |
−1.52 (0.12) |
1 | 5 |
| 4. It is safe to walk or jog in my neighborhood | 1672 (49) |
3.97 (1.27) |
−1.07 (0.06) |
−0.00 (0.12) |
1 | 5 |
| 5. Walkers and bikers can be seen easily by people in their homes | 1698 (23) |
3.81 (1.21) |
−0.81 (0.06) |
−0.25 (0.12) |
1 | 5 |
| 8. I often see other kids playing outside in my neighborhood | 1702 (19) |
3.85 (1.33) |
−0.93 (0.06) |
−0.38 (0.12) |
1 | 5 |
| 9. There are interesting things to look at in my neighborhood | 1703 (126) |
3.47 (1.30) |
−0.49 (0.06) |
−0.86 (0.12) |
1 | 5 |
| 10. My neighborhood streets are well lit at night | 1714 (6) |
3.33 (1.43) |
−0.34 (0.06) |
−1.23 (0.12) |
1 | 5 |
Note: All percentages are valid percentages; The confirmatory factor analyses were guided by theory, other studies that have conducted exploratory factor analyses or confirmatory factor analyses on the same measures, and model modification indices; TAAG: Trial of Activity for Adolescent Girls; SD: Standard deviation; SE: Standard error
a
item 4 is: When I am active it makes me depressed; and item 5 is: When I am active it frustrates me.
b
item 1 is: How often do you encourage your friends to do physical activity.
c
item 3 is: In my school most girls think it is important to be physically active.
d
item 6 is: There is so much traffic that it is hard to walk in my neighborhood; and item 7 is There is a lot of crime in my neighborhood.