The Natural History of Depression in Parkinson’s Disease within 30-Month Follow-Up

Table 1

Baseline clinical and sociodemographic characteristics of completers and noncompleters.

	Completers; (103)	Noncompleters; (7)	Test value
Male (%)	43 (41.7%)	3 (42.86%)		0.994
Mean age, years (SD)	65.83 (9.18)	80.71 (8.20)		0.000
PD duration, years (IQR)	7 (5)	11 (8)		0.006
Onset age, years (SD)	57.69 (10.20)	68.57 (10.06)		0.007
Education, years (IQR)	10.59 (4.04)	9 (3.46)		0.312
HDRS score (IQR)	8 (9)	9 (17)		0.394
MMSE score (IQR)	29 (3)	28 (1)		0.066
UPDRS-II score (SD)	11.03 (6.07)	14.43 (8.28)		0.169
UPDRS-III score (SD)	21.31 (12.16)	26.29 (16.23)		0.308

Values are represented as the mean (SD) of normally distributed variables or medians (IQR) of nonnormally distributed variables. For comparisons of demographics, values were obtained using two-sample tests, test, or rank sum test ( value); was considered significant. Abbreviations: PD: Parkinson’s disease; HDRS: Hamilton Depression Rating Scale; MMSE: Mini-Mental State Examination; UPDRS-II: The Unified Parkinson Disease Rating Scale for motor; UPDRS-III: The Unified Parkinson Disease Rating Scale for Activities of Daily Living portions.