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Table 2 Prevalence and severity of NVP in the 1st trimester of pregnancy according to race/ethnicity.

From: Epidemiology of nausea and vomiting of pregnancy: prevalence, severity, determinants, and the importance of race/ethnicity

Race/ethnicity n (%) Prevalencea n = 288 Severityb Intensity of nauseac
(mean ± SD)
Excessive salivation experienced
   Mild n = 145 Moderate n = 126 Severe n = 7   
Caucasian n = 298 237(79.53) 123 (52.79) 105 (45.06) 5 (2.15) 4.55 ± 2.41 46 (19.57)
Asian n = 15 9 (60.00) 4 (50.00) 4 (50.00) 0 5.17 ± 2.79 3 (37.50)
Black n = 37 26 (70.27) 11 (45.83) 11 (45.83) 2 (8.33) 5.40 ± 2.88 19 (79.17)
Hispanic n = 17 16 (94.12) 7 (53.85) 6 (46.15) 0 5.13 ± 2.68 5 (35.71)
  1. a Fisher's exact test: p = 0.06 (Pairwise comparisons p < 0.05: Asian vs Hispanic)
  2. b Fisher's exact test: p = 0.66
  3. c ANOVA: p = 0.34
  4. d Fisher's exact test: p < 0.0001 (Pairwise comparisons p < 0.05: Black vs Caucasian and Black vs Hispanic)