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Table 1 Baseline characteristics of study participants

From: Evaluating sensitivity and specificity of handheld point-of-care ultrasound testing for gynecologic pathology: a pilot study for use in low resource settings

Characteristic United States study participants (n = 60) Field study participants (n = 20) P value
Agea (years) 36 (28.5–38) 31 (24–53.5) 0.56c
BMI > 30 23/60 (38%) 0/20 (0%)  < 0.01
Paritya 1 (0–2) 2 (0.5–5.5) 0.13c
Race     < 0.01
 Caucasian 40/60 (67%) 0 (0%)  
 Black 17/60 (28%) 20/20 (100%)  
 Other 3/60 (5%) 0 (0%)  
Ethnic origin    0.23d
 Hispanic 5/60 (8%) 0/20 (0%)  
 Non-Hispanic 55/60 (92%) 20/20 (100%)  
Menopausal status    0.64d
 Pre-menopausal 48/60 (80%) 16/20 (80%)  
 Post-menopausal 12/60 (20%) 4/20 (20%)  
Day of menstrual cycleb 20 ± 12 Unknown n/a
Indication for USN     < 0.01
 Pelvic Pain 10/60 (17%) 20/20 (100%)  
 Abnormal uterine bleeding 17/60 (28%) 0/20 (0%)  
 IUD localization 8/60 (13%) 0/20 (0%)  
 Ovarian cyst 16/60 (27%) 0/20 (0%)  
 Follow up of known pathology 9/60 (15%) 0/20 (0%)  
  1. All data presented as n(%) unless otherwise noted
  2. n/a not applicable
  3. All p values calculated with chi-square test unless otherwise noted
  4. aMedian (interquartile range)
  5. bMean ± standard deviation
  6. cMann–Whitney U test used to calculate p value
  7. dFisher’s exact test used to calculate p value