Table 3.33: The comparison of mean height (cm) of intervention and control groups before and after intrervention (Stage 1 and T12 of stage 2) Studied place Before intervention After intervention Improved mean height (cm) p Intervention group (n=73) 83.14±6.81 (n=73) 85.79 ± 6.51 2.65 ±0, 3 <0.05 Control group (n=69) 82.37 ± 6.55 (n=69) 83.61 ± 6.59 1.24 ± 0.04 >0.05 p >0.05 <0.05 The mean height in the intervention increased 2.65 ±0.3 cm (p<0, 05) while the mean height in the control improved only 1, 24 ±0.04 cm that was not significant different compared with before the intervention with p>0, 05.