Table 3.

Characteristics of participants with stable (posterior probabilities ≥0.8, n=178) and fluctuating (posterior probabilities <0.8, n=52) fall risk trajectories. Scores are reported as mean (95% CI) or n (%).

Variable	Baseline			Change over the first 6 months
	Stable risk trajectory (Probability ≥80)	Fluctuating risk trajectory (Probability <80)	p-value	Stable risk trajectory (Probability ≥80)	Fluctuating risk trajectory (Probability <80)	p-value
Age (years)	66.9 (65.5, 68.3)	67.9 (65.6, 70.2)	.49
Disease duration (years since diagnosis)	6.2 (5.5, 6.9)	4.8 (3.7, 5.9)	.05
Levodopa equivalent dose (mg/day)	589.8 (513.3, 666.4)	454.1 (364.2, 544.1)	.08
PIGD score baseline (0 to >1.15)	.83 (.72, .94)	.65 (.53, .77)	.03
Motor subtype†			.03			.99
PIGD / shift	113 (64%)	24 (46%)		92 (57%)	26 (58%)
Indeterminate / no change	12 (7%)	8 (15%)		17 (11%)	5 (11%)
Tremor dominant / shift	52 (29%)	20 (38%)		52 (32%)	14 (31%)
FOG severity score (0 to 16)	3.2 (2.7, 3.8)	2.8 (1.8, 3.9)	.52	.4 (0, 0.7)	.1 (−.8, .9)	.47
Self-paced gait speed (m/sec)	1.18 (1.14, 1.22)	1.22 (1.17, 1.28)	.21	−.01 (−03, .02)	−06 (−.12, −.01)	.07
PASE score (0 to >400)	146.0 (133.7, 158.4)	134.6 (114.2, 154.9)	.38	−6.2 (−16.7, 4.4)	4.9 (−12.7, 22.4)	.33
Fall risk trajectory			.46
High	73 (74.5)	25 (25.5)
Fall risk score (0 to 11)	9.0 (8.4, 9.6)	5.6 (4.4, 6.9)	<.001
Medium	56 (76.7)	17 (23.3)
Fall risk score (0 to 11)	3.2 (2.6, 3.8)	3.8 (2.2, 5.5)	.40
Low	49 (83.1)	10 (16.9)
Fall risk score (0 to 11)	0.4 (−.2, .9)	1.1 (−.2, 2.4)	.24

PIGD: postural instability and gait disability; FOG: freezing of gait; PASE: Physical Activity Scale for the Elderly.

^†LeA side of dash (/) indicates baseline PD subtype, right side of dash indicates shift in subtype, of lack thereof, over 6 months.