Table 1.

Basic characteristics of included studies.

Author (year)	District	Assessment tools	Sample size	Disease rate	Age	Cancer staging	Factor	Quality assessment
Liu et al. (2014)	Guangzhou, Guangdong	SDS	245	120	57.2 ± 11.7	I ~ III	3, 7, 9	8
Wang and Xue (2014)	Hebei Chengde	HAMD	486	184	53.4 ± 12.5	0 ~ I II ~ III	2, 3, 4	5
Xu et al. (2015)	Guangdong Shenzhen	BDI	205	48	46.4 ± 8.6	–	2, 3, 4, 7, 8, 9, 11, 12	6
Liu (2016)	Ji’nan, Shandong	SDS	151	89	≥18	I ~ IV	2, 7, 9, 10	6
Lv et al. (2017)	Ji’nan, Shandong	HAMD; CES-D	180	112	43.0 ± 8.2	–	2, 3, 4, 6, 8	6
Yang (2017)	Chengdu, Sichuan	SDS	123	36	57.1 ± 10.2	I ~ II	8,	6
Zhu et al. (2017)	Changsha, Hunan	SDS	373	142	≥20	I ~ IV	7	6
Bai et al. (2018)	Beijing	SDS	137	65	47.2 ± 10.6	–	1, 2, 4, 10	7
Jin et al. (2018)	Nanjing, Jiangsu	HAMD	233	82	20 ~ 45	–	1, 2, 3, 5, 8, 9, 12	6
Xu et al. (2019)	Zhengzhou, Henan	SDS	130	80	46.7 ± 5.6	I ~ II III ~ IV	2, 4, 5, 6, 7, 9	8
Chen et al. (2019)	Jingzhou, Hubei	HAMD; CES-D	210	102	≥18	–	1, 2, 3, 5, 6, 11	7
Wang et al. (2020)	Henan Zhumadian	SDS	140	89	≥18	I II	1, 2, 4, 6	6
Lv et al. (2020)	Langfang, Hebei	SDS	222	88	58.6 ± 4.6	I ~ II III ~ IV	1, 2, 4, 6, 7	6
Chen et al. (2021)	Zhaoqing of Guangdong	SDS	236	61	41.8 ± 3.5	I ~ IV	2, 4, 5, 6, 7, 9, 10	6

Influencing factors: 1, age; 2, marriage; 3, occupation; 4, education; 5, economy; 6, mode of payment; 7, stage of disease; 8, mode of surgery; 9, family history; 10, place of residence; 11, underlying disease; 12, chemotherapy. Measurement tools: SDS, Self-Depression Scale; BDI, Beck Depression Self-Assessment Questionnaire; HAMD, Hamilton Depression Scale; HADS, Hospital Anxiety Depression Scale; PHQ-9, Patient Health Questionnaire Depression Scale; CES-D, Center for Epidemiologic Studies Depression Scale. “–” indicates that this item is not available.