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. Author manuscript; available in PMC: 2020 Aug 1.
Published in final edited form as: Parkinsonism Relat Disord. 2019 Jun 23;65:172–177. doi: 10.1016/j.parkreldis.2019.06.018

Table 2:

Factor analyses within each QOL scale in PD palliative population

Scale N Variance Explained Factor 1 Factor 2 Factor 3 Factor 4 Factor 5 Factor 6 Factor 7 Factor 8
PDQ-39 176 67% Mobility Items #1-11 Basic ADLs Items #12, 13, 15, 16 & 30 Social Support Items #27-29 & 36 Wellbeing & Pain Items #19, 20, 33 & 37-39 Stigma Items #23-26 Mood Items #17, 18, 21 & 22 Communication Items #14, 34 & 35 Cognition Items #31 & 32
PROMIS-29 191 47% Physical Symptoms Items #1-4 & 21-29 Psychosocial Symptoms Items #5-20
73% Mood Items #5-12 Pain Items #25-29 Physical Function Items #1-4 Fatigue Items #13-16 Social Roles & Activities Items #21-24 Sleep Items #17-20
QOL-AD 166 54% Wellbeing Items #1-3, 5, 9, 13 Home Life Items #4, 6, 7 & 12 Daily Activities Items #8, 10 & 11
McGill QOL 141 57% Wellbeing Items #4, 9-16 & QOL Overall Psychological Symptoms Items #5-8 Physical Symptoms Severity of symptom #1-3