approached significancep = 0.058
When only those with lateralised neck pain (left- or right-sided pain) were included in the analysis, findings were unchanged, although the interaction between Direction of Image Head Rotation × Side of Pain approached significance ( F 1, 150 = 3.66, p = 0.058, partial η 2 = 0.024; see Fig. 4B and Supplemental File for full analysis).