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Table 1 Baseline characteristics (intention-to-treat)

From: Acupuncture to improve tolerance of diagnostic esophagogastroduodenoscopy in patients without systemic sedation: results of a single-center, double-blinded, randomized controlled trial (DRKS00000164)

Characteristic Placebo acupuncture group (n = 177) Real acupuncture group (n = 177) P
Sex (%) Female 63 (35.6) 55 (31.1) 0.367a
Age (years) Mean (± standard deviation) 53.4 (13.8) 52.3 (13.5) 0.422b
Body mass index (kg/m2) Mean (± standard deviation) 26.7 (6.5) 25.8 (4.9) 0.139b
Current chemotherapy (%) Yes 3 (1.7) 5 (2.8) 0.474a
Current smoking (%) Yes 38 (21.5) 22 (12.4) 0.023a
ASA score (%) I 32 (18.1) 30 (16.9) 0.768
  II 106 (59.9) 110 (62.1)  
  III 36 (20.3) 36 (20.3)  
  IV 3 (1.7) 1 (0.6)  
  1. ASA American Society of Anesthesiology: Physical Status Classification System
  2. P ≤ 0.05
  3. aChi squared test
  4. bt test