Table 5.

Age-Related Distribution of Specific Motor Patterns (MPs) at the Beginning of the Motor Sequence

Motor pattern	Total number	Median age	P-value
Stretching (1)	1081(49.0)	43(30–58)	vs. 5 < .001 *** vs. 2 < .001 ***
Scratching (2)	551(25.0)	41(28–54)	vs. 1 < .001 ***
Comfort movements (3) and change in body position (4)	273(12.4)	46(30–56)	vs. 5 = .002 **
Food-carrying behaviors (5)	107(4.9)	32(24–46)	vs. 3 = .002 ** vs. 1 < .001 ***
Stretching (1) and scratching (2)	93(4.2)	42(30–54)	n.s.
Exploring the environment (6)	63(2.9)	44(27–54)	n.s.
Manipulative behaviors (7)	27(1.2)	34(28–62)	n.s.

Categorical data were presented as absolute number and percentage, continuous data were presented as median and interquartile range (IQR). Significant p-values after post hoc Bonferroni correction are presented; n.s. = non-significant (p-value > .05). Italics* represent significant difference (p < .05). * means p-value < .05, ** means < .01 and *** means < .001.