Table 4 Comparison of the effects of the peer education and instructor-based training interventions on students, knowledge, attitude, and behavior on waste separation at the source 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

G1

G2

G3

Mean difference

Std. Error difference

p. value

t

Mean difference

Std. Error difference

p. value

t

Mean difference

Std. Error difference

p. value

t

Knowledge

-0.875

0.544

0.111

-1.606

0.015

0.596

0.979

0.026

-0.890

0.498

0.076

-1.778

Attitude

1.093

0.322

0.001*

-3.386

-0.609

0.369

0.102

-1.648

-0.484

0.259

0.064

-1.867

Behavior

-2.453

0.518

0.001*

-4.731

-0.906

0.543

0.098

-1.667

-1.546

0.420

0.001*

-3.675

  1. G1: Mean values in the intervention group 1 were significantly different from those of the control group (Independent samples t test): *P < 0.05.
  2. G2: Mean values in the intervention group 2 were significantly different from those of the control group (Independent samples t test) : **P < 0.05.
  3. G3: Mean values in the intervention group 1 were significantly different from those of the intervention group 2 (Independent samples t test): ***P < 0.05.
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