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Table 1 Maternal characteristics and NVP status during pregnancy.

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

NVP status n = 367 1st trimester of pregnancy a
Maternal age-yr (mean ± SD) 31.74 ± 4.70
Gestational Age -wk (mean ± SD) 11.03 ± 1.84
Race/ethnicity- n (%)   
Caucasian 298 (81.20)
Asian 15 (4.09)
Black 37 (10.08)
Hispanic 17 (4.63)
NVP - n (%)   
Yes 288 (78.47)
No 79 (21.53)
Severity of NVP – n (%)   
Mild 145 (52.16)
Moderate 126 (45.32)
Severe 7 (2.52)
Intensity of nausea (range 0–10 b ) – (mean ± SD) 4.69 ± 2.48
Excessive salivation- n (%) 73 (25.98)
Distress caused by excessive salivation- n (%)   
Not at all 7 (9.72)
Slightly 24 (33.33)
Moderatly 17 (23.61)
Greatly 7 (9.72)
Unbearable 17 (23.61)
Medications use to treat NVP in 1 st trimester c – n (%) 57 (20.36)
Non-pharmacological methods use for NVP in 1 st trimester d–n (%) 50 (17.86)
  1. NVP = Nausea and vomiting of pregnancy
  2. a Missing values in the 1st trimester questionnaire: Severity of NVP (n = 10); Excessive salivation (n = 7); Distress caused by excessive salivation (n = 1); medications and non-pharmacological methods use for NVP (n = 8).
  3. b 0 represented "no nausea at all"and 10 represented "unbearable nausea".
  4. c Medications reported to be used in the 1st trimester of pregnancy to treat NVP were mostly (86%) the combination doxylamine/pyridoxine. Women also reported using metoclopramide, dimenhydrinate, hydroxyzine, meclizine, acetaminophen or acid reflux therapies.
  5. d Non-pharmacological methods used in the 1st trimester of pregnancy included lifestyle and dietary changes, and the use of ginger, acupressure, homeopathic products, herbal teas, mint or lemon.