Cluster | Age group T1 (yrs) | N | T1 | T2 | T2-T1 | T | df | p |
---|---|---|---|---|---|---|---|---|
Cluster 1 | 11-13 | 56 | 1.64 (0.55) | 1.70 (0.63) | + 0.06 | - .54 | 55 | .595 |
14-17 | 95 | 1.86 (0.68) | 1.64 (0.67) | - 0.22 | 2.89 | 94 | .005 | |
Cluster 2 | 11-13 | 136 | 1.81 (0.59) | 1.84 (0.61) | + 0.03 | - .50 | 135 | .619 |
14-17 | 203 | 1.89 (0.52) | 1.80 (0.56) | - 0.09 | 1.89 | 202 | .060 | |
Cluster 3 | 11-13 | 44 | 1.93 (0.63) | 1.86 (0.59) | - 0.07 | .65 | 43 | .519 |
14-17 | 109 | 2.05 (0.66) | 1.97 (0.70) | - 0.08 | .99 | 108 | .327 | |
Cluster 4 | 11-13 | 124 | 1.90 (0.58) | 1.79 (0.51) | - 0.11 | 1.74 | 123 | .085 |
14-17 | 186 | 1.81 (0.58) | 1.90 (0.64) | + 0.09 | −1.86 | 185 | .065 | |
Total | 11-13 | 360 | 1.83 (0.59) | 1.80 (0.58) | - 0.03 | .74 | 359 | .459 |
14-17 | 593 | 1.89 (0.60) | 1.84 (0.64) | - 0.05 | 1.74 | 592 | .083 |