| Estimated mean difference | 95% CI | Test statistics | P |
---|---|---|---|---|
Time 1 | Â | Â | Â | Â |
 Stable–decreasing | 1.1 | [− 2.3 to 4.5] | t(142) = 0.6 | .599 |
 Increasing–stable | 5.3 | [2.4–8.4] | t(142) = 4.2 | .000 |
 Increasing—decreasing | 6.4 | [2.7–10.2] | t(142) = 4.2 | < .001 |
Time 2 | Â | Â | Â | Â |
 Stable–decreasing | 4.0 | [1.2–7.0] | t(190) = 5.2 | .006 |
 Increasing–stable | 3.5 | [1.0–6.1] | t(302) = 3.2 | .004 |
 Increasing–decreasing | 7.6 | [4.2–11.1] | t(189) = 5.3 | < .001 |