Table 2.

Univariable and multivariable analyses for prediction of fear of falling 6 months after stroke.

Predictor	Univariable analysis		The area under the ROC curve (%)	Multivariable analysis of the significant variables in univariable analysis
	Odds ratio (95% CI)	P-value		Odds ratio (95% CI)	P-value
Age	1.03 (1.0–1.06)	0.005	60	1.00 (0.97–1.02)	0.89
Sex
Male (ref.)	1
Female	1.93 (1.19–3.12)	0.008	58	1.84 (0.90–3.80)	0.10
Height	0.98 (0.95–1.00)	0.046	43	1.00 (0.97–1.04)	0.93
Weight	0.99 (0.98–1.01)	0.736	47
Location of stroke			48
Left (ref.)	1
Right	0.95 (0.25–0.37)	0.94
Bilateral	0.89 (0.23–3.5)	0.87
Unknown	0.21 (0.01–2.52)	0.22
Fall(s) at the stroke unit
Yes (ref.)	2.27 (1.05–5.04)	0.037	54	1.92 (0.76–5.04)	0.16
No (ref.)	1
Length of stay at the stroke unit (days)	1.01 (0.99–1.04)	0.30	58
Use of walking aid			61
Yes	0.39 (0.24–0.64)	< 0.001		0.81 (0.44–1.48)	0.50
No (ref.)	1
Current smoker	1.08 (0.59–1.98)	0.799	51
No	1
NIHSS score			52
Mild (0–4) (ref.)	1
Moderate (5–15)	0.67 (0.04–10.9)	0.781
Severe (16–42)	0.94 (0.05–16.3)	0.969
SwePASS score (postural control)			67
Good (31–36) (ref.)	1
Moderate (25–30)	4.95 (2.52–9.75)	< 0.001		2.32 (0.98–5.52)	0.06
Poor (0–24)	3.86 (2.14–6.96)	< 0.001		2.60 (1.26–5.36)	0.01
SGPALS score
Physically active (2–4) (ref.)	1
Physically inactive (1)	2.87 (1.75–4.71)	< 0.001	63	2.04 (1.01–4.12)	0.048

CI, confidence interval; ROC, Receiver Operating Characteristic; SwePASS, The Modified Version of the Postural Assessment Scale for Stroke Patients; SGPALS, the Saltin-Grimby Physical Activity Level Scale. Variables with p-values less than 0.1 and 0.05 were considered significant for the univariable and multivariable analyses respectively, and are presented in bold. For the multivariable regression model, the p-value of the Hosmer and Lemeshow test was 0.31, the Cox and Snell R² was 0.14 and the Nagelkerke R² was 0.19. Included in the multivariable analysis, n = 276.