Table 3 Comparison of knowledge, attitude and behavior in terms of separation waste at the source before and after the intervention according to study groups (n = 192).

From: Comparison of peer and instructor training techniques on waste separation behavior at source amongst female students in Iran

Variables

Intervention group 1

(n = 64)

Intervention group 2

(n = 64)

Control group

(n = 64)

Before the intervention

After the intervention

p. value

Before the intervention

After the intervention

p. value

Before the intervention

After the intervention

p. value

Mean

SD

Mean

SD

Mean

SD

Mean

SD

Mean

SD

Mean

SD

Knowledge

11.187

3.049

11.968

2.462

0.128

10.718

2.465

11.078

3.133

0.465

11.031

2.343

11.093

3.597

0.896

Attitude

14.093

1.150

14.203

1.056

0.587

14.062

1.283

13.718

1.785

0.183

14.187

1.193

13.109

2.357

0.001*

Behavior

12.203

2.212

13.187

2.195

0.018*

11.359

2.484

11.640

2.553

0.477

12.562

1.917

10.734

3.519

0.001*

  1. Mean values were significantly different from those before the intervention (Paired samples t test): *P < 0.05.
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