. Author manuscript; available in PMC: 2021 Dec 1.

Published in final edited form as: Am J Ind Med. 2019 Oct 24;63(1):36–43. doi: 10.1002/ajim.23060

Table III:

Association between UPDRS3 score and PDQ-39 score and subscores

	Age-adjusted^a N = 187		Age, alcohol, smoking-adjusted^a,b N = 184^c
Z-score^d	β (95% CI)^e	p-value	β (95% CI)^e	p-value
PDQ-39 score	0.04 (0.02, 0.06)	0.001	0.04 (0.02, 0.06)	0.001

PDQ-39 subscore
Mobility	0.04 (0.01, 0.06)	0.001	0.04 (0.01, 0.06)	0.002
ADL	0.03 (0.01, 0.05)	0.01	0.03 (0.01, 0.05)	0.01
Emotional	0.04 (0.02, 0.06)	0.001	0.04 (0.01, 0.06)	0.001
Stigma	0.03 (0.01, 0.05)	0.01	0.02 (−0.005, 0.04)	0.13
Social support	0.01 (−0.01, 0.03)	0.30	0.01 (−0.01, 0.04)	0.22
Cognition	0.02 (−0.01, 0.04)	0.17	0.02 (−0.003, 0.04)	0.09
Communication	0.01 (−0.01, 0.03)	0.31	0.02 (−0.01, 0.04)	0.19
Bodily discomfort	0.02 (−0.001, 0.04)	0.06	0.03 (0.01, 0.05)	0.01

Abbreviations: ADL = activities of daily living; CI = confidence interval; SD = standard deviation;

UPDRS3 = Unified Parkinson’s Disease Rating Scale motor subsection part 3.

Adjusted for age as a continuous variable.

Also adjusted for ever/never alcohol consumption and never/former/current cigarette smoking. Not adjusted for sex due to small numbers.

Excludes participants with missing data on smoking (n = 1) or alcohol (n = 2).

Higher score indicates poor QoL. We transformed the PDQ-39 to z-scores so that the magnitude of the β estimates could be compared across subscores.

Standard deviation difference in PDQ-39 score (95% CI) per one point increase in the UPDRS3 score.