Table 2.

Hispanic proportion estimates overall, by phase, multi-institutional status, tier assessment, masking, and year.

	Frequency (%), studies	Total number of participants	Estimated proportion (95% CI)	P-value compared to reference category (*)	P-value compared to 2010 Census proportion (14.2%)	$I^2$(%)
Hispanic
Overall	–	–	11.6% (10.8–12.4)	–	< 0.0001	97.3%
Phase
II*	704 (66.3%)	74,942	10.6% (9.63–11.6)	–	< .0001	97.3%
III	358 (33.7%)	182,845	13.5% (12.0–15.0)	0.0012	0.97
Institution status
Single*	414 (39.0%)	85,147	10.8% (9.51–12.2)	–	0.0001	97.3%
Multi-institutional	648 (61.0%)	172,640	12.1% (11.0–13.1)	0.14	0.0093
Tier assessment
1*	371 (34.9%)	19,709	10.3% (8.96–11.7)	–	< .0001	97.3%
2	691 (65.1%)	238,078	12.2% (11.2–13.3)	0.030	0.017
Masking
No masking*	218 (20.5%)	40,976	10.3% (8.61–12.1)	–	0.0008	97.2%
Single	73 (6.87%)	18,956	11.1% (8.17–14.3)	0.67	0.14
Double	259 (24.4%)	57,691	11.0% (9.42–12.7)	0.57	0.0039
Triple	198 (18.6%)	61,581	13.6% (11.6–15.7)	0.016	0.93
Quadruple	314 (29.6%)	78,583	11.9% (10.4–13.4)	0.19	0.041
Study start year
2008*	76 (7.16%)	22,365	9.14% (6.57–12.1)	–	0.0041	97.0%
2009	87 (8.19%)	21,394	8.75% (06.37–11.4)	0.84	0.0008
2010	85 (8.00%)	41,081	11.8% (9.08–14.8)	0.19	0.27
2011	99 (9.32%)	12,522	9.52% (7.19–12.1)	0.84	0.0032
2012	105 (9.89%)	25,760	10.3% (7.92–12.9)	0.55	0.015
2013	125 (11.8%)	27,190	11.1% (8.81–13.5)	0.30	0.049
2014	121 (11.4%)	19,701	10.3% (8.13–12.7)	0.52	0.010
2015	121 (11.4%)	24,943	12.2% (9.81–14.7)	0.11	0.30
2016	112 (10.6%)	35,195	18.7% (15.8–21.7)	< .0001	0.0003
2017	92 (8.66%)	16,547	13.5% (10.7–16.6)	0.034	0.99
2018	27 (2.54%)	8175	14.1% (9.10–19.9)	0.096	0.83
2019	12 (1.13%)	2914	10.2% (3.89–18.7)	0.80	0.41