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. 2019 May 31;10:1165. doi: 10.3389/fpsyg.2019.01165

Table 5.

Pearson's coefficients among MDPQ, CPQ, MDPQ-16, CPQ-12, Frequency and length of use.

	Young				Middle-aged				Older				Total
	MDPQ	MDPQ-16	CPQ	CPQ-12	MDPQ	MDPQ-16	CPQ	CPQ-12	MDPQ	MDPQ-16	CPQ	CPQ-12	MDPQ	MDPQ-16	CPQ	CPQ-12
Age	−0.21^*	−0.19^*	−0.15	−0.10	−0.39^**	−0.40^**	−0.35^**	−0.39^**	−0.62^**	−0.62^**	−0.67^**	−0.67^**	−0.82^**	−0.82^**	−0.80^**	−0.78^**
Mobile length of use	0.15	0.13	0.06	0.03	0.30^**	0.31^**	0.19^*	0.20^*	0.58^**	0.57^**	0.52^**	0.52^**	0.72^**	0.72^**	0.68^**	0.69^**
Frequency mobile use	0.26^**	0.24^**	0.08	0.01	0.39^**	0.41^**	0.34^**	0.35^**	0.83^**	0.82^**	0.79^**	0.79^**	0.81^**	0.82^**	0.78^**	0.78^**
Computer length of use	−0.09	−0.09	−0.02	−0.00	0.84^**	0.84^**	0.86^**	0.88^**	0.80^**	0.79^**	0.93^**	0.93^**	0.87^**	0.87^**	0.91^**	0.92^**
Computer frequency	0.11	0.09	0.17^*	0.11	0.78^**	0.79^**	0.84^**	0.85^**	0.80^**	0.79^**	0.92^**	0.91^**	0.87^**	0.87^**	0.91^**	0.91^**
MDPQ	1	0.97^**	0.76^**	0.73^**	1	0.99^**	0.92^**	0.91^**	1	0.99^**	0.91^**	0.89^**	1	0.99^**	0.96^**	0.94^**
MDPQ-16	0.97^**	1	0.73^**	0.71^**	0.99^**	1	0.92^**	0.90^**	0.99^**	1	0.91^**	0.89^**	0.99^**	1	0.95^**	0.95^**
CPQ	0.76^**	0.73^**	1	0.96^**	0.92^**	0.92^**	1	0.98^**	0.91^**	0.91^**	1	0.99^**	0.96^**	0.95^**	1	0.99^**
CPQ-12	0.73^**	0.71^**	0.96^**	1	0.91^**	0.90^**	0.98^**	1	0.89^**	0.89^**	0.99^**	1	0.94^**	0.95^**	0.99^**	1

^*

p < 0.05;

^**

p < 0.001.