Table A1.

Descriptive Information for Participants Diagnosed with Parkinson's Disease.

Participant	Sex	Age (years)	Time since Dx (years)	Vital capacity (L)	Reported speech problem	Clinical rating of speech/voice severity
						Reduced loudness	Monotonicity	Breathiness	Articulatory precision	Speech rate	Hoarseness
PD01	F	72	1	2.43	Yes	Mild	Mild	Mild–moderate	WNL	Minimal	Minimal
PD02	F	69	9	2.4	Yes	Mild	WNL	WNL	WNL	WNL	WNL
PD03	F	74	5	2.54	No	WNL	WNL	WNL	WNL	WNL	WNL
PD04	F	79	6	1.74	No	WNL	Mild	Mild–moderate	WNL	WNL	Mild
PD05	M	83	4.92	2.69	Yes	Severe	Severe	Moderate	Mild	Moderate	Moderate
PD06	M	76	5	3.56	Yes	Moderate	Moderate–severe	Moderate–severe	Moderate	Moderate–severe	Moderate–severe
PD07	M	73	11	2.71	Yes	Moderate	Severe	Moderate	Moderate	Mild	Mild
PD08	M	68	3.5	5.08	Yes	Mild	Mild	WNL	WNL	WNL	WNL
PD09	M	90	3	2.46	Yes	Mild	Moderate	Moderate	Mild	Severe	Severe
PD10	M	69	4.92	4.22	Yes	Mild	Mild	WNL	Mild	WNL	WNL
PD11	M	68	9	4.44	Yes	Mild	Mild–moderate	WNL	Minimal	WNL	WNL
PD12	M	70	4.33	2.98	Yes	Minimal	Mild–moderate	Mild–moderate	WNL	WNL	WNL
PD13	M	82	3.67	3.31	No	Mild	Mild	Moderate	Minimal	Minimal	Minimal

Note. Order of speech/voice severity is minimal, mild, moderate, and severe. Dx = diagnosis; F = female; WNL = within normal limits; M = male.