Table 1.
Study and patient characteristics
| Study characteristics | No. of studies | No. of patients | Patient characteristics | No./Total (mean or %) |
|---|---|---|---|---|
| Publication year | Age (years) | 44.00 | ||
| 2003-2008 | 41 | 23,814 | BMI (kg/m2) | 52.13 |
| 2009-2014 | 30 | 87,707 | Weight (kg) | 130.36 |
| Study design | Sex | |||
| RCT | 4 | 1,052 | Male | 16,256/72,725 (22.4) |
| OBS | 67 | 110,469 | Female | 56,469/72,725 (77.6) |
| Surgical procedure | Surgical procedure | |||
| GB | 65 | 74,063 | GB | 74,063/107,874 (68.7) |
| AGB | 12 | 30,671 | AGB | 30,671/107,874 (28.4) |
| SG | 10 | 3,140 | SG | 3,140/107,874 (2.9) |
| Age | 57 | 88,196 | ||
| BMI | 58 | 60,277 | ||
| Weight | 12 | 7,685 | ||
| Sex | 58 | 72,725 |
RCT: randomized clinical trial; OBS: observational studies; GB: gastric bypass; AGB: adjustable gastric banding; SG: sleeve gastrectomy; BMI: body mass index; kg: kilogram; m: meter.