Table 4.

Association between basal cortisol and adrenal axis 6 months post-surgery.

Basal cortisol concentration (nmol/L)	Sufficient	Insufficient	Total	Cut-off limits (nmol/L)	Specificity (%)	Sensitivity (%)	NPV (%)	PPV (%)
0–99	2	2	4	100	96	67	98	50
100–199	2	0	2	200	92	67	98	33
200–299	5	1	6	300	81	100	100	25
300–399	9	0	9	400	62	100	100	14
400–499	4	0	4	500	53	100	100	12
500–599	4	0	4	600	45	100	100	10
≧600	21	0	21
Total	47	3	50