Article

AIM: To compare the original normative data of the Alberta Infant Motor Scale
(AIMS) (n=2202) collected 20 years ago with a contemporary sample of Canadian
infants. METHOD: This was a cross-sectional cohort study of 650 Canadian infants
(338 males, 312 females; mean age 30.9wks [SD 15.5], range 2wks-18mo) assessed
once on the AIMS. Assessments were stratified by age, and infants proportionally
represented the ethnic diversity of Canada. Logistic regression was used to place
AIMS items on an age scale representing the age at which 50% of the infants
passed an item on the contemporary data set and the original data set.
Forty-three items met the criterion for stable regression results in both data
sets. RESULTS: The correlation coefficient between the age locations of items on
the original and contemporary data sets was 0.99. The mean age difference between
item locations was 0.7 weeks. Age values from the original data set when
converted to the contemporary scale differed by less than 1 week. INTERPRETATION:
The sequence and age at emergence of AIMS items has remained similar over 20
years and current normative values remain valid. Concern that the 'back to sleep'
campaign has influenced the age at emergence of gross motor abilities is not supported.
CI - (c) 2014 The Authors. Developmental Medicine & Child Neurology published by John
Wiley & Sons Ltd on behalf of Mac Keith Press.

Langue : ANGLAIS