TABLE 3.

Two‐by‐two contingency tables for the proportional association between Romberg condition 4 test performance and fall status

Fall status	No failure during Romberg condition 4	Failure during Romberg condition 4	Total
No fall history	41	18	59
Fall history	18 a	15 b	33
Total	59	33	92

Contingency table of fall history versus clinical deficient vestibular efficacy status in Parkinson's disease (PD; likelihood ratio χ² = 2.1; P = 0.15).

^a Fall history present in 30.5% of patients with PD without failure during Romberg condition 4.

^b Failure during Romberg condition 4 present in 45.5% of patients with PD with falls.