Table 3.
Development indexes of the preterm infants in the two groups during six months of age
| Development indexes | Intervention group | Control group |
t-test,
P-value |
|---|---|---|---|
| Mean±SD | Mean±SD | ||
| Following moving objects with the head | 1.36±0.49 | 2.75±0.87 | t=7.58, P<0.001* |
| Social laughs | 3.43±1.35 | 3.51±1.52 | t=0.22, P=0.82 |
| Keeping the head stable when changing position from lying to sitting | 2.40±0.93 | 2.79±4.90 | t=2.01, P=0.04* |
| Making “Agha” sound | 3.86±1.41 | 5.03±1.48 | t=2.84, P=0.006* |
| Taking objects by the hand | 3.80±1.49 | 5.55±1.08 | t=5.02, P<0.001* |
| Laughing | 5.13±1.43 | 5.59±1.11 | t=1.33, P=0.18 |
*Significant