Table 2.

Incidence of biochemical hypocalcaemia at various intervals.

Interval	Incidence
	(n)	(%)
At 6hrs postoperatively	27/196	13.8
At 24 hours postoperatively	31/196	15.8
Overall Incidence Day 1	42/196	21.4
2–4 weeks	17/196	8.67
4 weeks – 6months	10/196	5.1
> 6 months	7/196	3.6