failed to reach significanceP = 0.055
SENS PD failed to reach significance (1.5, 95% CI 1.5–3.0, P = 0.055) and PDQ39 was not significantly different (3.3, 95% CI 1.8–8.4, P = 0.21).
SENS PD failed to reach significance (1.5, 95% CI 1.5–3.0, P = 0.055) and PDQ39 was not significantly different (3.3, 95% CI 1.8–8.4, P = 0.21).
In those who were out of target, there was a significant difference between the PKG+ and PKG− arm for MDS-UPDRS Total (7.3, 95% CI 3.4–11.2, P = 0.002) and III (5.3, 95% CI 2.4–8.3, P = 0.0004), but not for PDQ39 and SENS PD (although these approached significance in people who were bradykinetic at onset: P = 0.07 and P = 0.05 respectively).
The difference between the first and last visit were then calculated for each arm and then compared (Table 3 , All participants PKG+ (1st–last visit) vs PKG− (1st–final visit)): the MDS-UPDRS III was significantly different (4.1, 95% CI 1.3–6.9, P = 0.01) but the difference for MDS-UPDRS Total, while still large, fell just short of significance (4.4, 95% CI 0.6–8.4, P = 0.07).
While the change in PDQ39 score in the PKG+ arm just failed to reach statistical significance ( P = 0.07), the mean change in this study (4.7) compares favourably with that of the best change (~2.2) from levodopa 7 and the 17% change in PDQ39 in this study also compares favourably with that seen in DBS (24%) 9 .