Table 5. Evaluation of walking speed estimation accuracy.

	Validation set (n = 197)
Model	ICC (3,1)a [95% CI]	MAE (%)	RMSE (cm/s)
Regression models
Model 1	0.937 [0.918 0.952]	4.70	6.81
Human gait models
Model 2	0.446 [-0.058 0.783]	20.93	25.99
Model 3	0.585 [-0.052 0.865]	19.47	22.07
Human gait models (Fitted)
Model 4	0.893 [0.861 0.918]	6.24	8.63
Model 5	0.920 [0.895 0.939]	5.44	7.59

Note. ICC, Intraclass Correlation Coefficient; CI, Confidence Interval; MAE, Mean Absolute Error; RMSE, Root Mean Square Error; SD, Standard Deviation.

^aIntraclass Correlation Coefficients are presented with 95% confidence interval.