highly significantP < 0.001
Furthermore, the PSQI score in the Hospice Care Group (5.68 ± 0.90) was significantly lower than that in the Routine Care Group (7.45 ± 1.19), reflecting a highly significant difference ( t = –8.714, P < 0.001), with a Cohen’s d of 1.043, which constitutes a large effect size, indicating that the treatment had a substantial and clinically meaningful impact on sleep quality ( Table 3 ).