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. Author manuscript; available in PMC: 2023 May 1.
Published in final edited form as: Am J Psychiatry. 2022 May;179(5):388–392. doi: 10.1176/appi.ajp.21070758

TABLE 1.

Sample sizes in all studies

Measure or Group All Studies U.S. Only All Studies U.S. Only All Studies U.S. Only All Studies U.S. Only All Studies U.S. Only All Studies U.S. Only
Full sample N across all articles Number of articles Nongenetic N across all articles Number of articles Genetic N across all articles Number of articles
Total sample size 18,939,676 474,978  125  62 15,099,944 162,739  92  49 3,839,731 312,239  33  13
Total sample size of articles that provided information on sex/gender 15,711,826 358,718  105  57 14,953,766 46,479  80  44 758,060 312,239  22  13
Total sample size of articles that provided information on race or ethnicity 1,172,244 250,144    54  41 48,834 45,005  39  32 1,123,410 205,139  15    9
U.S. Census dataa (%) Full sample N across all articles % (out of applicable total sample size) Nongenetic N across all articles % (out of applicable total sample size) Genetic N across all articles % (out of applicable total sample size)
Female    50.8 7,976,830 99,484  50.8    27.7 7,662,372 22,482  51.2  48.4 314,458 77,002    41.5    24.7
Male    49.2 7,712,711 259,231  49.1    72.3 7,269,109 23,994  48.6  51.6 443,602 235,237    58.5    75.4
Total  100.0 15,689,541 358,715  99.9  100.0 14,931,481 46,476  99.8  99.9 758,060 312,239  100.0  100.0
American Indian or Alaska Native/Native American   0.7 6 6    0.0   0.0 6 6    0.0    0.0 0 0   0.0   0.0
Asian/Asian American   5.6 2,554 206    0.2   0.1 547 202    1.1    0.4 2,007 4   0.2   0.0
Biracial/multiracial/more than one race/multiple   2.5 52 50    0.0   0.0 39 37    0.1    0.1 13 13   0.0   0.0
Black/African American/African    12.4 29,788 29,306    2.5    11.7 3,718 3,236    7.6    7.2 26,070 26,070   2.3    12.7
Hispanic/Latino    18.4 2,602 2,602    0.2   1.0 2,602 2,602    5.3    5.8 0 0   0.0   0.0
Native Hawaiian or other Pacific Islander   0.2 1 1    0.0   0.0 1 1    0.0    0.0 0 0   0.0   0.0
Other/nonwhite   0.3 5,427 4,913    0.5   1.9 5,171 4,657  10.6  10.4 256 256   0.0   0.1
White/Caucasian    60.0 1,109,474 211,281  94.6    84.5 347,869 32,499  71.4  72.2 1,074,605 178,782    95.7    87.2
Total  100.0 1,149,904 248,365  98.1    99.3 46,953 24,353  96.1  96.1 1,102,951 205,125    98.2    99.9
a

U.S. Census data are from the 2019 American Community Survey 1-year estimates.