Table 4 Analysis of covariance to adjust the pre-intervention scores as the covariate
Variables | Source | Sum of Squares | df | Mean Square | statistic F | p-value | Partial Eta Squared |
|---|---|---|---|---|---|---|---|
Perceived susceptibility | baseline score | 1.40 | 1 | 1.40 | .157 | .692 | .001 |
intervention | 1968.050 | 1 | 1968.050 | 220.623 | .000 | .443 | |
error | 2470.960 | 277 | 8.920 | ||||
R Squared = .444 (Adjusted R Squared = .440) | |||||||
Perceived severity | baseline score | 331.328 | 1 | 331.328 | 25.513 | .000 | .084 |
intervention | 3343.666 | 1 | 3343.666 | 257.466 | .000 | .482 | |
error | 3597.351 | 277 | 12.987 | ||||
R Squared = .493 (Adjusted R Squared = .489) | |||||||
Perceived benefits | baseline score | .627 | 1 | .627 | .049 | .825 | .000 |
intervention | 2689.980 | 1 | 2689.980 | 210.166 | .000 | .431 | |
error | 3545.416 | 277 | 12.799 | ||||
R Squared = .432 (Adjusted R Squared = .427) | |||||||
Perceived barriers | baseline score | 252.736 | 1 | 252.736 | 10.201 | .002 | .036 |
intervention | 60.665 | 1 | 60.665 | 2.449 | .119 | .009 | |
error | 6862.621 | 277 | 24.775 | ||||
R Squared = .042 (Adjusted R Squared = .035) | |||||||
Self-efficacy | baseline score | 4.676 | 1 | 4.676 | .388 | .534 | .001 |
intervention | 2677.917 | 1 | 2677.917 | 221.984 | .000 | .445 | |
error | 3341.610 | 277 | 12.064 | ||||
R Squared = .446 (Adjusted R Squared = .442) | |||||||
Behavior | baseline score | 2116.404 | 1 | 2116.404 | 162.966 | .000 | .370 |
intervention | 4473.805 | 1 | 4473.805 | 344.490 | .000 | .554 | |
error | 3597.332 | 277 | 12.987 | ||||
R Squared = .640 (Adjusted R Squared = .638) | |||||||