Table 1.

Demographics and smartphone-use scores of study participants (n=1000).

Characteristics		Value, n (%)
Gender
	Male	382 (38.2)
	Female	618 (61.8)
Age in years
	19-39	481 (48.1)
	40-59	419 (41.9)
	60+	100 (10.0)
Marital status
	Not married	359 (35.9)
	Married	641 (64.1)
Patient/carer
	Patient	414 (41.4)
	Carer	586 (58.6)
Respondent's main carer
	Spouse/family	962 (96.2)
	Other	38 (3.8)
Education
	College or higher-level education	722 (72.2)
	High school or lower-level education	278 (27.8)
Residential district
	Seoul/capital area	702 (70.2)
	Other	298 (29.8)
Smartphone-use score
	≤60	45 (4.5)
	61-80	356 (35.6)
	≥81	599 (59.9)