Table 5.

Pearson's correlation test between user variables and number of changes when selecting the response for these variables, respectively.

		Mood	Num. changes when selecting mood	Sleep	Num. changes when selecting sleep	Pain	Num. changes when selecting pain	Pain level	Num. changes when selecting mood pain level
Mood	Pearson's correlation	1	−0.172∗∗	−0.133∗∗	−0.054	−0.158∗∗	−0.080	−0.335∗∗	−0.035
	Sig. (2-tailed)		0.000	0.003	0.234	0.000	0.074	0.000	0.438
	N	497	497	497	497	497	497	497	497
Num. changes when selecting mood	Pearson's correlation	−0.0172∗∗	1	0.084	0.166∗∗	−0.052	0.023	0.115∗	0.035
	Sig. (2-tailed)	0.000		0.061	0.000	0.244	0.608	0.010	0.433
	N	497	497	497	497	497	497	497	497
Sleep	Pearson's correlation	−0.133∗∗	0.084	1	0.300∗∗	0.121∗∗	0.027	0.125∗∗	0.037
	Sig. (2-tailed)	0.003	0.061		0.000	0.007	0.548	0.005	0.412
	N	497	497	497	497	497	497	497	497
Num. changes when selecting sleep	Pearson's correlation	−0.054	0.166∗∗	0.300∗∗	1	0.053	−0.025	0.139∗∗	0.402∗∗
	Sig. (2-tailed)	0.234	0.000	0.000		0.234	0.581	0.002	0.000
	N	497	497	497	497	497	497	497	497
Pain	Pearson's correlation	−0.158∗∗	−0.052	0.121∗∗	0.053	1	0.194∗∗	0.703∗∗	0.393∗∗
	Sig. (2-tailed)	0.000	0.244	0.007	0.234		0.000	0.000	0.000
	N	497	497	497	497	497	497	497	497
Num. changes when selecting pain	Pearson's correlation	−0.080	0.023	0.027	−0.025	0.194∗∗	1	0.149∗∗	0.049
	Sig. (2-tailed)	0.074	0.608	0.548	0.581	0.000		0.001	0.274
	N	497	497	497	497	497	497	497	497
Pain level	Pearson's correlation	−0.335∗∗	0.115∗	0.125∗∗	0.139∗∗	0.703∗∗	0.149∗∗	1	0.371∗∗
	Sig. (2-tailed)	0.000	0.010	0.005	0.002	0.000	0.001		0.000
	N	497	497	497	497	497	497	497	497
Num. changes when selecting mood pain level	Pearson's correlation	−0.035	0.035	0.037	0.402∗∗	0.393∗∗	0.049	0.371∗∗	1
	Sig. (2-tailed)	0.438	0.433	0.412	0.000	0.000	0.274	0.000
	N	497	497	497	497	497	497	497	497

^∗∗Correlation is significant at the 0.01 level (2-tailed). ^∗Correlation is significant at the 0.05 level (2-tailed).