Table 4.

Association between severity and frequency of symptoms and duration of device use

	More severe (n = 115)	Remains same or less severe (n = 185)	P value
Duration of device use in hours pre-COVID-19 Mean ± SD	5.4 ± 1.8	5.0 ± 2.2	0.055
Duration of device use in hours during COVID-19 Mean ± SD	7.5 ± 2.8	5.8 ± 2.5	< 0.001*
P value	< 0.001*	0.001*

	More frequent (n = 145)	Remains same or less frequent (n = 155)
Duration of device use in hours pre-COVID-19 Mean ± SD	5.3 ± 1.9	4.9 ± 2.2	0.094
Duration of device use in hours during COVID-19 Mean ± SD	7.1 ± 2.8	5.9 ± 2.4	< 0.001*
P value	< 0.001*	< 0.001*

*Statistically significant at 5% level of significance