Table 2.

Receiver operating characteristic for handgrip strength as an indicator of not having depression.

	Men (n = 10,182)		Women (n = 10,416)
	50–64 years old	≥ 65 years old	50–64 years old	≥ 65 years old
Without depression
n	4330	4168	4065	3266
Grip strength (kg)	48.49 ± 8.68	41.29 ± 8.55	30.37 ± 6.02	25.97 ± 5.75
With depression
n	841	843	1713	1372
Grip strength (kg)	46.94 ± 9.25	38.48 ± 8.75	28.66 ± 6.59	23.89 ± 6.83
p value	< 0.001	< 0.001	< 0.001	< 0.001
AUC (95% CI)	0.54 (0.52, 0.57)	0.58 (0.56, 0.60)	0.58 (0.56, 0.59)	0.60 (0.58, 0.62)
Grip strength cut-off for depression (kg)	43.50	39.50	29.50	22.50
Sensitivity	0.73	0.60	0.57	0.74
Specificity	0.66	0.49	0.46	0.58

AUC area under curve, CI confidence interval.