Skip to main content
. Author manuscript; available in PMC: 2020 Sep 12.
Published in final edited form as: J Nucl Med. 2011 May 13;52(6):848–855. doi: 10.2967/jnumed.111.089946

TABLE 2:

Average (SD) follow-up MMSE scores at years 1-4 in the PD[+]D and PD[−]D groups.1

PD[+]D PD[−]D Statistical significance
Year 1 25.6±2.8 27.7±2.2 tapprox=1.4; P=0.12
Year 2 27.3±2.0 27.8±1.2 tapprox=0.7; P=0.50
Year 3 23.2±3.0 28.1±1.6 tapprox=4.4; P=0.0005
Year 4 22.6±2.5 28.0±1.4 tapprox=4.2; P=0.0004

MMSE scores become significantly lower in the PD[+]D subjects in years 3 and 4 compared to the PD[−]D group. Satterthwaite’s method of approximate t tests (tapprox) were used for group comparisons.

1

Data are presented as mean ± SD, unless otherwise indicated.