Table 1

 Clinical characteristics at presentation

Characteristic
Method of presentation % (n/N)
Hypocalcaemic seizure33.3 (42/126)
Bowed legs22.2 (28/126)
Sibling diagnosis18.3 (23/126)
Failure to thrive5.6 (7/126)
Delayed motor development5.6 (7/126)
Fractures4.0 (5/126)
Bone pain4.0 (5/126)
Incidental finding3.2 (4/126)
Chest infection3.2 (4/126)
Chronic medical problems0.8 (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)
SGA23.0 (18/77)
AGA59.0 (46/77)
LGA18.0 (13/77)