Community-based assisted screening for mild cognitive impairment using gait and handwriting kinematic parameters analysis

Table 5 Classification power of kinematic parameters in gait and handwriting tasks between groups

	LR (%)	XGB (%)	RF (%)	GBC (%)	Gaussian NB (%)
Gait tasks
Accuracy	66.33	69.33	63.00	69.44	69.44
Sensitivity	29.17	49.83	44.50	54.00	50.67
Specificity	91.87	85.44	82.06	82.88	85.02
Positive predictive value	53.33	65.33	49.17	64.17	64.00
Negative predictive value	68.00	73.74	71.94	73.53	72.90
AUC	0.61	0.68	0.63	0.68	0.68
Brier	0.34	0.31	0.37	0.31	0.31
Graphics handwriting tasks
Accuracy	69.56	72.44	70.44	60.78	73.44
Sensitivity	54.17	64.00	57.33	43.67	66.00
Specificity	86.51	81.21	81.81	74.41	83.27
Positive predictive value	66.67	72.00	69.00	43.33	71.67
Negative predictive value	74.82	75.82	73.19	68.51	78.76
AUC	0.70	0.73	0.70	0.59	0.75
Brier	0.30	0.28	0.30	0.39	0.27
Chinese character handwriting tasks
Accuracy	63.22	63.00	64.44	55.78	68.44
Sensitivity	18.67	26.83	59.33	25.33	20.67
Specificity	90.98	84.88	74.45	76.95	92.40
Positive predictive value	31.67	34.17	53.50	39.17	36.67
Negative predictive value	66.32	67.99	74.51	65.13	68.37
AUC	0.55	0.56	0.67	0.51	0.57
Brier	0.37	0.37	0.36	0.42	0.32
Gait and graphics handwriting tasks
Accuracy	69.67	69.44	71.67	74.44	73.67
Sensitivity	48.67	57.67	46.67	59.00	68.50
Specificity	87.78	76.90	90.10	88.21	83.17
Positive predictive value	66.67	57.50	55.83	77.50	68.33
Negative predictive value	72.66	72.74	72.63	75.73	80.29
AUC	0.68	0.67	0.68	0.74	0.76
Brier	0.30	0.31	0.28	0.26	0.26
Gait and Chinese character handwriting tasks
Accuracy	62.44	68.44	67.44	60.33	69.78
Sensitivity	42.50	44.33	37.00	39.50	41.50
specificity	80.66	85.71	87.52	76.39	85.04
Positive predictive value	47.50	56.67	58.17	44.83	57.50
Negative predictive value	69.86	71.77	71.81	67.96	71.92
AUC	0.62	0.65	0.62	0.58	0.63
Brier	0.38	0.32	0.33	0.40	0.30

AUC: Area under the receiver operating characteristic curve; LR: Logistic regression; XGB: EXtreme Gradient Boosting; RF: Random forest; GBC: Gradient boosting classifier; Gaussian NB: Gaussian Naive Bayes.