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Table 7 The mean values scored by children in each domain in the three subgroups

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

Comm. domain Age
Group a (age 6–12 months) Group b (age 13–18 months) Age 19–24 months Total
No M (± SD) 42.68 (± 4.30) 55.10 (± 6.5) 59.67 (± 3.20) 52.29 (± 7.37)
Mean age M (± SD) 6.53 (± 0.95) 7.55 (± 1.17) 8.22 (± 1.03) 7.41 (± 1.14)
Passive joint attention M (± SD) 5.20 (± 1.2) 6.98 (± 1.14) 7.58 (± 1.24) 6.55 (± 1.19)
Active joint attention M (± SD) 3.98 (± 0.99) 4.7 (± 0.68) 5.2 (± 0.62) 4.62 (± 0.763)
Gesture use M (± SD) 4.45 (± 0.93) 5.48 (± 0.90) 6.75 (± 1.19) 5.55 (± 1.01)
Expressive language M (± SD) 6.23 (± 1.87) 9.25 (± 1.37) 10.36 (± 1.6) 8.62 (± 1.28)
Receptive language M (± SD) 7.11 (± 2.04) 9.93 (± 1.44) 10.4 (± 1.36) 9.15 (±1.64)
Object use M (± SD) 9.2 (± 1.92) 10.8 (± 0.88) 11.2 (± 0.83) 10.4 (± 1.16)
Social interaction 8.44 16.16 22.37 15.68 (± 7.24)
Full scale 56 40 55 151
  1. The table shows the mean score earned by the participants in each of the seven scales score as well as the total score in each study group (a, b, c)