Table 1 Clinical characteristics at presentation.

Characteristic
Method of presentation	% (n/N)
Hypocalcaemic seizure	33.3 (42/126)
Bowed legs	22.2 (28/126)
Sibling diagnosis	18.3 (23/126)
Failure to thrive	5.6 (7/126)
Delayed motor development	5.6 (7/126)
Fractures	4.0 (5/126)
Bone pain	4.0 (5/126)
Incidental finding	3.2 (4/126)
Chest infection	3.2 (4/126)
Chronic medical problems	0.8 (1/126)
Growth parameters	Mean (SD)
Weight z score	−0.85 (1.44)
Height z score (97/126 available)	−1.01 (1.68)
Birth weight	% (n/N)
SGA	23.0 (18/77)
AGA	59.0 (46/77)
LGA	18.0 (13/77)