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Table 2 Patient characteristics

From: Comparative efficacy of serotonin (5-HT3) receptor antagonists in patients undergoing surgery: a systematic review and network meta-analysis

Total no. of patients 80,410  
Mean, Median sample size 181, 118  
Mean % female 72  
  No. of studies (n = 444) * Percentage of studies
Age category   
Children only (aged <18 yr) 75 16.89
Adults only (aged ≥18 yr to ≤65 yr) 262 59.01
Children and adults (aged ≤65 yr) 17 3.83
Adults and elderly (aged ≥18 yr) 76 17.12
All ages 9 2.03
Not reported 5 1.13
American Society of Anesthesiologists (ASA) physical status   
I 15 3.38
I or II 266 59.91
I or II or III 87 19.59
II or III 4 0.90
Not reported 72 16.22
Surgery type   
Obstetric and gynecological 134 30.18
Gastrointestinal 51 11.49
Eye 35 7.88
General dentistry, oral and maxillofacial surgery, and orthodontics 35 7.88
Otolaryngological 20 4.50
Breast 18 4.05
Orthopedic 16 3.60
Neurological 15 3.38
Endocrine 9 2.03
Cardiovascular 3 0.68
Urological 1 0.23
Miscellaneous (includes multiple surgery types, abdominal surgery, and plastic surgery unspecified) 103 23.20
Not reported 4 0.90
History of motion sickness   
Yes 147 33.11
No or not reported 297 66.89
History of postoperative nausea and vomiting   
Yes 197 44.37
No or not reported 247 55.63
Comorbidities **   
Not reported 415 93.47
Diabetes mellitus 9 2.03
Cardiovascular 8 1.80
Obesity 5 1.13
Cancer 4 0.90
Migraines 3 0.68
Gallbladder 2 0.45
Liver disease 2 0.45
Asthma 1 0.23
Disorder of the ear 1 0.23
Mental health 1 0.23
Osteoarthritis 1 0.23
Urological 1 0.23
  1. * Includes unpublished data; ** Some studies considered more than one comorbidity