highly significantp < 0.001
The difference between the two subgroups was statistically highly significant (p < 0.001) (McLauchlan et al., 1997, p. 296) [ 11 ].
The difference between the two subgroups was statistically highly significant (p < 0.001) (McLauchlan et al., 1997, p. 296) [ 11 ].