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Table 1: 
Characteristics of study cohorta
EBP (n = 127)No EBP (n = 4308)P Value
BMI28.69 (8.09)29.34 (8.27).25
 BMI group.56
  <2547 (3.25)1399 (96.75)
  25–3033 (2.65)1212 (97.35)
  >3047 (2.69)1697 (97.31)
 Needle type/size<.001
  22W30 (1.38)2147 (98.62)
  20Q69 (4.6)1431 (95.4)
  22Q28 (3.69)730 (96.31) 
  • ↵a The numeric values are reported with percentages in parentheses.