. Author manuscript; available in PMC: 2016 Jan 1.

Published in final edited form as: J Perinatol. 2015 Jan 29;35(7):516–521. doi: 10.1038/jp.2014.243

Table 2.

Sensitivity, Specificity, Positive and Negative Predictive Values of Bayley III Motor Composite Scores for Indicating Gross and/or Fine Motor Impairment

Outcome	Motor Composite Cut Point	Sensitivity	Specificity	Positive Predictive Value	Negative Predictive Value
Gross Motor Impairment
GMFCS Level ≥ 2	70	88	94	58	99
	73	94	93	54	99
	76	95	90	46	99
	79	97	86	38	100
	82	98	80	31	100
	85	99	75	26	100
Fine Motor Impairment
FMss < 3	70	100	93	38	100
	73	100	92	32	100
	76	100	89	26	100
	79	100	84	21	100
	82	100	79	16	100
	85	100	73	13	100
Gross and/or Fine Motor Impairment^*
GMFCS Level ≥ 2 and/or FMss < 3	70	89	95	67	99
GMFCS Level ≥ 2 and/or FMss < 3	73	95	94	62	99
	76	96	91	53	99
	79	97	87	44	100
	82	98	81	36	100
	85	99	76	30	100

Of the 98 children with GMFCS≥2, 71 had data for the fine motor composite scores. Of those 71, 31 (44%) had a fine motor score < 3. Of the 45 children with fine motor impairment, 31 (69%) had GMFCS≥2.