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Table 1 Validity of HG registration in MBRN using hospital records and strict diagnostic criteria 1 (N = 551)

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

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. 1 Strict diagnostic criteria indicate severe HG.