Table 1.
Acquired developmental milestones: gross and fine motor
|
Skill |
Classic (
N
= 542, 5 without answers) |
Atypical better (
N
= 50) |
Atypical poorer (
N
= 46, 1 without answers) |
||||||
|---|---|---|---|---|---|---|---|---|---|
| Acquired | Lost | Retained | Acquired | Lost | Retained | Acquired | Lost | Retained | |
| Gross motor | |||||||||
| Rolling |
95 (511) |
23 (118) |
77 (414) |
96 (48) |
6.3 (3)* |
96 (48) ◊ |
87 (39) ● |
28 (11) |
62 (28)* |
| Sit with support |
97 (520) |
12 (62) |
88 (473) |
100 (50) |
2.0 (1)● |
100 (50) |
93 (42) |
19 (8) |
84 (38) |
| Sit alone |
80 (427) |
16 (70) |
69 (369) |
94 (47)* |
0 (0) |
94 (47) ◊ |
31 (14) ◊ |
21 (3) |
24 (11) ◊ |
| Crawl |
69 (370) |
38 (139) |
45 (244) |
88 (43)* |
7.0 (3) ◊ |
82 (41) ◊ |
22 (10) ◊ |
40 (4) |
13 (6) ◊ |
| Pull to stand |
62 (331) |
34 (112) |
43 (231) |
92 (46) ◊ |
4.3 (2) ◊ |
88 (44) ◊ |
16 (7) ◊ |
43 (3) |
8.9 (4) ◊ |
| Walk with help |
79 (422) |
13 (54) |
71 (383) |
94 (47) * |
4.3 (2) |
92 (46) ◊ |
31 (14) ◊ |
14 (2) |
27 (12) ◊ |
| Walk alone |
53 (284) |
14 (41) |
47 (253) |
78 (39) ◊ |
13 (5) |
70 (35) ◊ |
6.7 (3) ◊ |
67 (2) |
2.2 (1) ◊ |
| Climb Steps |
20 (106) |
26 (27) |
15 (81) |
62 (31) ◊ |
23 (7) |
52 (26) ◊ |
0 (0) |
0 (0) |
0 (0) |
| Ride tricycle |
4 (22) |
32 (7) |
3.2 (17) |
16 (8)* |
0 (0) |
16 (8) * |
2.2 (1) |
0 (0) |
2.2 (1) |
| Fine motor | |||||||||
| Hold bottle |
85 (455) |
49 (223) |
46 (248) |
98 (49)* |
12 (6) ◊ |
92 (46) ◊ |
71 (32) ● |
34 (11) |
53 (24) |
| Reach |
97 (523) |
49 (255) |
58 (314) |
100 (50) |
10 (5) ◊ |
94 (47) ◊ |
91 (41) ● |
27(11)* |
76 (34)* |
| Transfer |
78 (418) |
61 (257) |
69 (370) |
96 (48) ◊ |
17 (8) ◊ |
86 (43) ◊ |
71 (32) |
38(12)* |
49 (22)* |
| Pincer grasp |
74 (396) |
72 (285) |
24 (128) |
90 (45)* |
36(16) ◊ |
66 (33) ◊ |
42 (19) ◊ |
32 (6) ◊ |
29 (13) |
| Finger feed | 91 (489) | 56 (276) | 45 (242) | 96 (48) | 10 (5) ◊ | 90 (45) ◊ | 64 (29) ● | 28 (8)* | 47 (21) |
% (N = number): p values for Classic vs. Atypical better and Classic vs. Atypical poorer are indicated for acquired, lost, and retained skills ●<0.05; *<0.01; ◊<0.001.