Table 1.

Validity of HG registration in MBRN using hospital records and strict diagnostic criteria¹ (N = 551)

	HG + in hospital record	HG – in hospital record	Total
HG + in MBRN	9	39	48
HG – in MBRN	5	498	503
Total	14	537	551
Sensitivity (9/14)	64.3%	95% CI: 38.8-83.7
Specificity (498/537)	92.7%	95% CI: 90.2-94.6
Positive predictive value (9/48)	18.6%	95% CI: 10.2-31.9
Negative predictive value (498/503)	99.0%	95% CI: 97.7-99.6

¹ Strict diagnostic criteria indicate severe HG.