Table 2.

Means, standard deviations, ranges, and sample sizes of cross-sectional data from the MSEL Fine Motor scale, by age and group

Age	HRA+	HRA−	LRC	p (3-group)	d (HRA+ vs. HRA−)	d (HRA+ vs. LRC)	d (HRA− vs. LRC)
6 months	7.86 (1.21) 6–11 n = 22	8.42 (1.28) 6–12 n = 50	8.13 (1.27) 6–12 n = 61	0.20	− 0.44	− 0.22	0.23
12 months	16.5 (2.08) 12–21 n = 30	17.27 (1.80) 12–20 n = 67	16.58 (1.63) 12–20 n = 67	0.04	− 0.41	− 0.05	0.40
18 months	20.36 (1.66) 16–24 n = 25	21.03 (1.64) 17–24 n = 67	20.96 (1.54) 19–25 n = 67	0.19	−0.41	− 0.38	0.04
24 months	24.12 (2.42) 19–28 n = 25	25.13 (2.12) 20–29 n = 61	25.56 (2.59) 20–32 n = 63	0.04	−0.46	− 0.57	−0.18