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Table 8 The significance of difference between the mean score in each scale among the three groups

From: The early communicative skills among a sample of Egyptian infants and toddlers

Comm. domain Age
Age 6–12 months Age 13–18 months Age 19–24 months
Passive joint attention 19–24 months 0.000* 0.000* --------
13–18 months 0.000* -------- 0.000*
6–12 months -------- 0.000* 0.000*
Active joint attention 19–24 months 0.000* 0.007* ---------
13–18 months 0.000* ---------- 0.007*
6–12 months ------- 0.000* 0.000*
Gesture use 19–24 months 0.000* 0.044* ---------
13–18 months 0.000* --------- 0.044*
6–12 months -------- 0.000* 0.000*
Expressive language 19–24 months 0.000* 0.009* ----------
13–18 months 0.000* --------- 0.009*
6–12 months --------- 0.000* 0.000*
Receptive language 19–24 months 0.000* 0.000* -----------
13–18 months 0.000* ---------- 0.000*
6–12 months ---------- 0.000* 0.000*
Object use 19–24 months 0.000* 0.004* ----------
13–18 months 0.000* ----------- 0.004*
6–12 months ---------- 0.000* 0.000*
Social interaction 19–24 months 0.000* 0.372 ---------
13–18 months 0.000* ------- 0.372
6–12 months ---------- 0.000* 0.000*
The full scale 19–24 months 0.000* 0.271 -------
13–18 months 0.000* --------- 0.271
6–12 months --------- 0.000* 0.000*
  1. The table shows the p value of the statistical difference between mean scores (in each scale) earned by the participants in the three studied group. The table shows that there was a significant statistical differences between the mean score of each scale when comparing the three studied groups
  2. 0.000* = highly significant value