Table 2.

Association between gender, ages, uses gestures, screen size activity and symptoms risk of DQT (n = 937)

	N	OR	High risk of DQT	P-value
			95%CI
Usage Times
< 2 h/day	6	Ref
2<-≤4 h/day	37	0.937	0.326–2.697	0.904
4<-≤6 h/day	146	2.003	0.732–5.480	0.176
6<-≤8 h/day	192	4.454	1.662–12.229	0.004
>8 h/day	107	4.521	1.596–12.811	0.004
Uses
Phone Games	163	1.997	1.312–3.040	0.001
Social Media	391	2.263	1.795–3.833	< 0.001
Leisure Activities	322	1.679	1.140–2.475	0.009
Study	116
Gestures
UTDP	266	1.156	0.786–1.702	0.461
UT-OA	63	0.892	0.559–1.422	0.630
BT	232	1.900	1.281–2.817	0.001
BT-HS	86	1.872	1.244–2.818	0.003
UI-OA	60	0.835	0.536–1.299	0.423
Screen Size (inch)
<5.0	22	Ref
5.0<-≤5.5	186	2.064	1.108–3.846	0.022
5.5<-≤6.0	109	1.591	0.840–3.016	0.154
6.0<-≤6.5	129	2.413	1.125–4.083	0.021
6.5<-≤7.0	40	1.725	0.810–3.673	0.158
>7.0	2	0.766	0.126–4.653	0.773
Symptoms	82	1.387	0.905–2.126	0.133

Notes:

1. Models were adjusted for gender, age.

2. Bold values indicate p < 0. 05.