Table 4 Treatment by covariate interactions in a one-stage random effects Cox regression model for OS

From: Chemotherapy vs supportive care alone for relapsed gastric, gastroesophageal junction, and oesophageal adenocarcinoma: a meta-analysis of patient-level data

Parameter P -value for treatment by covariate interaction term
Age 0.34
Gender (male vs female) 0.88
Performance status (0 or 1 vs 2) 0.44
Disease stage (locally advanced vs metastatic) 0.18
TTP from first-line chemotherapy (during treatment vs within 3 months vs within 3–6 months) 0.04
Disease site (oesophagus vs OG junction vs stomach) 0.28
Number of progression sites (1 vs 2 or more) 0.28
  1. Abbreviation: TTP=time to progression.