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Table 2 Frequency of neurologic signs of potential concern and proportion showing each sign who had normal or abnormal neurologic outcome

From: Apparently benign craniocervical signs in achondroplasia: “neurologic leftovers” identified through a retrospective dataset

Type of concern

Number of subjects N (% n/105)a

Normal outcome, N

Abnormal outcome, N

Excessively brisk reflexes

24 (23%)

19 (19/24, 79%)

5 (5/24, 21%)

Asymmetric reflexes, arms

3 (3%)

1 (1/3, 33%)

2 (2/3, 67%)

Asymmetric reflexes, legs

15 (14%)

11 (11/15, 73%)

4 (4/15, 27%)

Clonus, unilateral

27 (26%)

20 (20/28, 75%)

7 (7/27, 25%)

Clonus, bilateral

39 (37%)

33 (33/39, 85%)

6 (6/39, 15%)

Upgoing Babinski response, unilateral

35 (33%)

30 (30/35, 86%)

5 (5/35, 14%)

Upgoing Babinski response, bilateral

39 (37%)

30 (30/39, 77%)

9 (9/39, 23%)

Asymmetric strength, arms

3 (3%)

0 (0/3, 0%)

3 (3/3, 100%)

Asymmetric strength, legs

6 (6%)

3 (3/6, 50%)

3 (3/6, 50%)

  1. aThe number of events exceeds the total number of subjects since one patient could display more than one sign