Table 2

Validity of HG registration in MBRN using hospital records and less strict diagnostic criteria1 (N = 550)2
HG + in hospital record HG – in hospital record Total
HG + in MBRN 26 21 47
HG – in MBRN 5 498 503
Total 31 519 550
Sensitivity (26/31) 83.9% 95% CI: 67.4-92.9
Specificity (498/519) 96.0% 95% CI: 93.9-97.3
Positive predictive value (26/47) 55.3% 95% CI: 41.2-68.6
Negative predictive value (498/503) 99.0% 95% CI: 97.7-99.6

1 Less strict diagnostic criteria indicate mild HG.

2 One medical record went missing during the investigating period.

Vikanes et al.

Vikanes et al. BMC Pregnancy and Childbirth 2012 12:115   doi:10.1186/1471-2393-12-115

Open Data