Table 3.

Association between isometric muscle strength reference thresholds and the decline of autonomy.

Muscle groups	Loss of autonomy OR (95% CI)	p-value	p-value*	AUC (95% CI)	Sensibility (%)	Specificity (%)	PPV (%)	NPV (%)
Knee flexors	0.44 (0.76-2.75)	0.55	0.56	0.56 (0.48-0.65)	38.5	75.4	71.6	43.1
Knee extensors	1.63 (1.03-2.59)	0.03	0.04	0.60 (0.52-0.58)	50	73	77.9	40.7
Ankle flexors	1.94 (1.03-3.67)	0.04	0.09	0.61 (0.53-0.70)	47.7	74.6	74.2	47.7
Ankle extensors	1.77 (1.02-3.05)	0.009	0.03	0.59 (0.50-0.67)	62	82	74.3	42
Hip abductors	1.69 (0.90-3.19)	0.19	0.13	0.57 (0.48-0.65)	29.5	99.9	85.7	38.6
Hip extensors	1.87 (0.80-3.24)	0.55	0.30	0.60 (0.51-0.68)	59.5	64	77.4	47.7
Elbow flexors	1.32 (0.75-2.32)	0.53	0.57	0.56 (0.47-0.64)	55.4	59.3	73.4	42.9
Elbow extensors	1.60 (0.69-3.69)	0.79	0.44	0.56 (0.47-0.64)	38.5	72.6	71	40.3

^*p-value adjusted for age and sex. Legend: AUC= Area Under the Curve, PPV= Positive Predictive Value, NPV= Negative Predictive Value.