Development of the percentage (%) weight loss prediction model at six, 12, 24, 36 months after gastrectomy
| Predictive factors | Estimate | 95% CI | P-value | P-value |
|
|---|---|---|---|---|---|
| Time period after gastrectomy (mo) | 6 (ref) | 0.0004 | |||
| 12 | 0.412 | 0.170, 0.654 | 0.0009 | ||
| 24 | 0.077 | –0.174, 0.327 | 0.5483 | ||
| 36 | –0.087 | –0.350, 0.177 | 0.5196 | ||
| Age | 0.040 | 0.012, 0.068 | 0.0053 | ||
| Sex | Male (ref) | ||||
| Female | 2.069 | 1.416, 2.721 | <0.0001 | ||
| Preop BMI | 0.782 | 0.683, 0.881 | <0.0001 | ||
| Operation type | PPG (ref) | <0.0001 | |||
| TG | 5.275 | 4.230, 6.321 | <0.0001 | ||
| PG | 2.599 | –0.336, 5.533 | 0.0826 | ||
| DG | 0.755 | –0.106, 1.616 | 0.0855 | ||
| Gastric cancer stage | I (ref) | 0.0159 | |||
| II | 1.374 | 0.390, 2.358 | 0.0062 | ||
| III | 0.663 | –0.241, 1.568 | 0.1506 | ||
| Equation of prediction model | Weight loss (%)=–14.8+(0.412×12 months after gastrectomy)+(0.077×24 months after gastrectomy)+(–0.087×36 months after gastrectomy)+(0.04×age)+(2.069×female)+(0.782×preop BMI)+(5.275×TG)+(2.599×PG)+(0.755×DG)+(1.374×cancer stage II)+(0.663×cancer stage III) | ||||
CI = confidence interval; ref = reference; Preop = preoperative; BMI = body mass index; PPG = pylorus-preserving gastrectomy; TG = total gastrectomy; PG = proximal gastrectomy; DG = distal gastrectomy.
aOverall significance of the predictor.