The prevalence of depression and anxiety among Chinese adults with cancer: a systematic review and meta-analysis

Table 2 Assessment of study quality

Studies	Quality Indicators from Newcastle-Ottawa scale
	1	2	3	4	5A	5B	6	7	8	Total score
Yang & Bao, 2003	Yes	No	No	Yes	Yes	Yes	No	Yes	No	5
Tang, 2008	Yes	No	No	Yes	Yes	Yes	No	Yes	No	5
Long et al., 2008	Yes	No	No	Yes	Yes	Yes	No	Yes	No	5
Zhang et al., 2008	Yes	No	Yes	Yes	Yes	Yes	No	Yes	No	6
Tao et al., 2005	Yes	No	Yes	Yes	Yes	Yes	No	Yes	No	6
Liu et al., 2001	Yes	No	Yes	Yes	Yes	Yes	Yes	Yes	No	7
Zhang et al., 2009	Yes	No	Yes	Yes	Yes	Yes	No	Yes	No	6
Wang et al., 2005	Yes	No	Yes	Yes	Yes	Yes	No	Yes	No	6
Tian et al., 2005	Yes	No	No	Yes	Yes	Yes	No	Yes	No	5
Liu, 2006	Yes	No	Yes	Yes	Yes	Yes	Yes	Yes	No	7
Yuan & Zheng, 2004	Yes	No	No	Yes	Yes	Yes	No	Yes	No	5
Gao et al., 1989	Yes	No	No	Yes	Yes	Yes	No	Yes	No	5
Chen & Gao, 2010	Yes	No	No	Yes	Yes	Yes	No	Yes	No	5
She, 2009	Yes	No	No	Yes	Yes	Yes	No	Yes	Yes	6
Zhao et al., 2001	Yes	No	No	Yes	Yes	Yes	No	Yes	Yes	6
Wan et al., 2004	Yes	No	Yes	Yes	Yes	Yes	No	Yes	No	6
Zhang et al., 2003	Yes	No	Yes	Yes	Yes	Yes	Yes	Yes	No	7

Abbreviations: 1 indicates cases independently validated; 2, cases are representative of population; 3, community controls; 4, controls have no history of cancer; 5A, study controls for age/gender; 5B, study controls for additional factor(s); 6, ascertainment of depression/anxiety by blinded structured interview or secure record; 7, same method of ascertainment used for cases and controls; and 8, nonresponse rate the same for cases and controls.