Paired Differences

Mean

Std.

Deviation

Std. Error Mean

95% Confidence Interval of the Difference

t

df

Sig (2-tailed)

Lower

Upper

DD11-DD17

2.946

2.64497

1.18287

−0.33817

6.23017

−2.491

4

0.067

DH11-DH17

0.924

1.11838

0.50016

−0.46466

2.31266

−1.847

4

0.138

DD21-DD27^*

6.556

3.51130

1.57030

2.19614

10.9159

4.175

4

0.014

DH21-DH27^*

4.056

2.63183

1.17699

0.78815

7.32385

3.446

4

0.026