Abstract
Palliative care is often started late in patients with life-threatening conditions, particularly in patients with advanced cancer. However, with the emergence of the early palliative care (EPC) paradigm, their quality of life (QoL) may be better. Although several previous meta-analyses support the effectiveness of EPC in increasing QoL, essential issues related to the optimisation of EPC interventions are still needed. A systematic review and meta-analysis of randomised controlled trials (RCTs) were conducted to determine the effectiveness of EPC on the QoL of patients with advanced cancer. PubMed, ProQuest, MEDLINE through EBSCOhost and Cochrane Library and clinicaltrials.gov (register website) were searched for RCTs published before May 2022. Data synthesis used the Review Manager 5.4 to generate pooled estimates of effect size. A total of 12 empirical trials met the eligibility criteria and were included in this study. The results showed that EPC intervention had a significant effect (standard mean difference = 0.16, 95% confidence interval: 0.04, 0.28, Z = 2.68, P < 0.05). However, the secondary outcomes showed including mood (mean difference = -0.90, 95% CI: -2.32, 0.51, P > 0.05) and symptom controls (MD = -1.49, 95% CI: -3.81, 0.81, P > 0.05) had no significant effect. EPC is effective in improving the QoL of patients with advanced cancer. However, other outcomes still need to be reviewed, because the review of QoL is not enough to generalise the benchmarks for the effectiveness and optimisation of EPC interventions. Another notable aspect is to consider the most effective and efficient duration for starting and ending EPC interventions.