Table 2. Associations between p62 expression and OS stratified according to the ethnics, case number, NOS score, antibodies and cut-off value.

Categories	Subgroups	Ref	HR (95% CI)	Heterogeneity test (I2, P-value)
Ethnics	Asian	[16, 19–24, 26, 27, 29–31, 33]	2.69 (2.08–3.48)	37.3%, 0.085
	Not Asian	[18, 28, 32, 35]	1.48 (1.08–2.04)	39.4%, 0.176
Case Number	≥ 150	[20, 23, 24, 26–29, 32, 33, 35]	2.15 (1.69–2.72)	56.5%, 0.014
	<150	[16, 18, 19, 21, 22, 30, 31]	2.53 (1.84–3.47)	15.4%, 0.312
NOS Score	≥ 7	[16, 19, 20, 22–24, 26–29, 32, 33, 35]	2.18 (1.75–2.71)	58.1%, 0.004
	<7	[18, 21, 30, 31]	2.61 (1.70–4.00)	0.0%, 0.681
Antibody	Santa Cruz	[20–22, 24, 27, 31]	2.11 (1.50–2.96)	23.5%, 0.258
	Abcam	[19, 23, 26, 29, 30]	2.77 (1.77–4.32)	9.9%, 0.350
	MBL	[16, 28, 35]	1.72 (1.20–2.46)	59.3%, 0.086
	NR	[18, 32, 33]	2.21 (1.47–3.34)	74.2%, 0.021
Cut-off Value	IRS	[19,21–23,26, 27, 29, 30]	2.55 (1.80–3.61)	0.0%, 0.448
	Percentage	[16, 18, 20, 24, 28, 31, 32, 35]	1.73 (1.34–2.23)	34.9%, 0.150

IRS: Immunoreactive Score; NR: Not Reported.