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. 2020 May 5;3(5):e204096. doi: 10.1001/jamanetworkopen.2020.4096

Table 2. Domain Scores on the Bayley Scales of Infant and Toddler Development, Third Edition.

Score	Cognitive	Composite		Language		Motor
Score	Cognitive	Language	Motor	Receptive	Expressive	Fine	Gross
Standard scores
Mean (SD) [sample range]	55.23 (1.75) [55-70]	47.71 (2.89) [47-71]	46.26 (1.83) [46-64]	NA^a	NA^a	NA^a	NA^a
Floor score (No. [%] at floor)	55 (118 [97.5])	47 (106 [87.6])	46 (116 [95.9])	1^b	1^b	1^b	1^b
Raw scores
Mean (SD) [sample range]	10.47 (9.75) [0-54]	NA^a	NA^a	6.69 (3.19) [0-24]	4.60 (3.39) [0-21]	6.36 (6.72) [0-35]	9.89 (8.58) [0-47]
Raw scores resulting in floor score	1-42	NA^a	NA^a	NA^a	NA^a	NA^a	NA^a
Scaled scores
Mean (SD) [sample range]	1.05 (0.35) [1-4]	NA^a	NA^a	1.17 (0.64) [1-7]	1.08 (0.47) [1-5]	1.05 (0.39) [1-5]	1.03 (0.20) [1-3]
Age-equivalent score
Mean (SD) [sample range]	2.24 (3.09) [0.16-19]	NA^a	NA^a	3.02 (2.89) [0.16-21]	2.59 (2.96) [0.16-20]	2.15 (2.93) [0.16-20]	2.29 (2.52) [0.16-15]

Abbreviation: NA, not applicable.

^{^a}

Scores do not exist for this scale.

^{^b}

The floor score for the individual scales is 1.