(I)

use per day

(J)

use per day

Mean Difference (I-J)

Std. Error

Sig.

95% Confidence Interval

Lower Bound

Upper Bound

Less than half an hour

Half an hour―less an hour

One hour―less than 3 hours

3 hours and more

−0.72308^*

−0.75181^*

−0.87608^*

0.202150

0.19252

0.19285

0.002

0.0010

0.0000

−1.2448

−1.2487

−1.3738

−0.2013

−0.2549

−0.3783

Half an hour―less an hour

Less than half an hour

One hour―less than 3 hours

3 hours and more

0.72308^*

−0.02874

−0.15300

0.20215

0.09911

0.09975

0.002

0.991

0.418

0.2013

−0.2845

−0.4105

1.2448

0.22710

0.1045

One hour―less than 3 hours

Less than half an hour

Half an hour―less an hour

3 hours and more

0.75181^*

0.02874

−0.12427

0.19252

0.09911

0.07843

0.001

0.991

0.389

0.2549

−0.2271

−0.3267

1.2487

0.2845

.07820

3 hours and more

Less than half an hour

Half an hour―less an hour

One hour―less than 3 hours

0.87608^*

0.153000

0.12427

0.19285

0.09975

0.07843

0.000

0.418

0.389

0.3783

−0.1045

−0.0782

1.3738

0.4105

0.3267