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. 2022 Sep 6;12(9):e052687. doi: 10.1136/bmjopen-2021-052687

Table 2.

Question subcategories which emerged during data extraction

Question* Subcategories
Q2: How can we most effectively manage HG?

  1. Outpatient treatment

  2. Intravenous treatment

  3. Tube feeding

  4. Other treatments
Q3: What causes HG?

  1. Genetic studies

  2. Helicobacter pylori

  3. Laboratory studies of other factors, for example, hCG

  4. Psychosocial factors

  5. Other causes
Q5: What are the immediate and long-term effects of HG on the fetus?

  1. Perinatal outcomes

  2. Long-term outcomes
Q7: What are the relative efficacies of current treatments?

  1. Anti-emetics

  2. Steroids

  3. Other treatments
Q8: What are the immediate and long-term effects of HG on pregnant people?

  1. Psychosocial effects

  2. Wernicke’s encephalopathy

  3. Other maternal complications due to HG

  4. Long-term maternal health

  5. Metabolic impact (laboratory results)

  6. Other outcomes
Q9: What clinical measurements and markers in HG are available and most useful in assessing, diagnosing, managing and monitoring HG?

  1. Psychosocial measurements

  2. Helicobacter pylori as marker

  3. Other laboratory markers

  4. HG assessment questionnaires

  5. Other assessments

*Questions 1, 6 and 10 did not require subcategories.

hCG, human chorionic gonadotrophin; HG, hyperemesis gravidarum.