Evaluation of the Structural Differences between T1D
and T2D (Research Objective 2)
The first constrained model was tenable in the longitudinal tests, with practical
fit indices showing good model fit (Table 2, Panel B). The χ2 differences
were not statistically significant for the factor interrelation equivalence model
(p > .10). This confirms that these models account as well for the sample’s
variance/covariance as the unrestricted model. The other models proved to
be applicable at p ≤ .02, suggesting that paths and factor residuals were to
some extent sample specific (Table 2, Panel B).
Effects of the SCT Variables on Physical Activity
(Research Question 3)
To test where the differences between the diabetes groups occur, dissimilarities
in the paths were tested in the factor interrelation equivalence models
(cf. Methods section). Predicted associations were tested between the baseline
SCT variables with 6-month PA (Figure 1).
Self-efficacy was the main predictor of goals and subsequent behavior
in both diabetes groups. In both groups, self-efficacy was significantly