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Table 2 Validity of HG registration in MBRN using hospital records and less strict diagnostic criteria 1 (N = 550) 2

From: Hyperemesis gravidarum in the Medical Birth Registry of Norway – a validity study

 

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. 1 Less strict diagnostic criteria indicate mild HG.
  2. 2 One medical record went missing during the investigating period.