Circulating vitamin D level before initiating chemotherapy impacts on the time-to-outcome in metastatic colorectal cancer patients: systematic review and meta-analysis

Table 3 Detailed risk of death and progression in the selected articles

Author	Year	Median follow-up (months)	Median OS (months)	HR_OS	CI_OS	P_OS	Median PFS (months)	HR_PFS	CI_PFS	P_DFS
Ng	2011	61.2	NR	0.94	0.72–1.23	0.55	NR	NR	NR	NR
Obermannova	2015	24.2	41.2	2.220	1.074–4.592	0.031	15.4	1.699	1.016–2.845	0.043
Golubić	2017	46	39	1.0064	0.3882–2.609	0.989	10.5	NR	NR	NR
Ng	2019	22.9	24.3	NR	NR	NR	13	0.64	0–0.90	0.02
Yuan	2019	67.2	33	0.66	0.53–0.83	0.0009	11	0.81	0.66–1.00	0.03

The table presents a synthesis of clinical outcomes extracted from the selected studies. Each study is delineated by the first author's name and publication year, followed by pertinent information on median follow-up, median OS, HRs for OS, CIs for OS, p-values for OS, median PFS, HRs for PFS, CIs for PFS, and p-values for PFS
CI confidence interval, HR hazard ratio, NR not reported, OS overall survival, P p-value, PFS progression-free survival

ISSN: 1479-5876