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. Author manuscript; available in PMC: 2012 Jan 1.
Published in final edited form as: J Child Psychol Psychiatry. 2010 Dec 3;52(1):13–21. doi: 10.1111/j.1469-7610.2010.02288.x

Table 3.

Exploratory analyses: within-group and between-group comparisons of growth rate (slopes)

Non-IS Group IS Group Difference between IS and Non-IS

Outcome Pre-test to post-test Post-test to follow-up Change in slopes Overall time effect Pre-test to post-test Post-test to follow-up Change in slopes Overall time effect Pre-test to post-test Post-test to follow-up

Effect size (p-value) Effect size (p-value) Effect size (p-value) p-value Effect size (p-value) Effect size (p-value) Effect size (p-value) p-value Effect size (p-value) Effect size (p-value)
Primary outcomes
SEI .48 (.06) −.33 (.17) −.81 (.05)* .13 1.19 (.00) .05 (.78) −1.14 (.01)* <.001* .76 (.04)* .43 (.24)
IJA .66 (.10) −.34 (.42) −1.00 (.05)* .13 1.59 (.00) .34 (.41) −1.25 (.02)* <.001* .93 (.11) .68 (.25)
SPA .56 (.19) −.18 (.68) −.74 (.25) .40 1.39 (.00) .22 (.62) 1.18 (.07) .01* .83 (.17) .41 (.52)

Secondary outcomes
EL T .89 (.02)* −.10 (.73) −.99 (.02)* .01* 1.49 (.00)* −.01 (.97) −1.50 (<.001)* .00* .60 (.13) .09 (.83)
VR T .20 (.44) −.23 (.37) −.43 (.25) .51 1.04 (.00)* −.34 (.20) −1.37 (<.001)* .00* .84 (.02)* −.10 (.78)