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. 2021 Nov 29;9(12):1406. doi: 10.3390/vaccines9121406

Table A2.

Demographic characteristics of vaccine survey respondents vs. non-respondents, n (%).

Demographic Characteristics Non-Respondents
(n = 774)
Respondents
(n = 3161)
SMD *
Age in Years 0.10
 18–39 252 (32.6) 885 (28.0)
 40–64 355 (45.9) 1534 (48.5)
 ≥65 167 (21.6) 742 (23.5)
mean/sd 49.8 (16.9) 51.1 (15.8) 0.09
Gender 0.04
 Female 421 (54.4) 1702 (53.8)
 Male 348 (45.0) 1431 (45.3)
 Other 5 (0.6) 27 (0.9)
 Unknown 0 (0.0) 1 (0.0)
Race–ethnicity 0.45
 White 308 (39.8) 1928 (61.0)
 Black 52 (6.7) 116 (3.7)
 Asian 195 (25.2) 575 (18.2)
 Hispanic 147 (19.0) 312 (9.9)
 Multiple races 46 (5.9) 154 (4.9)
 Other/Unknown 26 (3.4) 76 (2.4)
Education 0.34
 Less than college 161 (20.8) 340 (10.8)
 College 371 (47.9) 1506 (47.6)
 Higher than college 217 (28.0) 1261 (39.9)
 Unknown 25 (3.2) 54 (1.7)

* SMD, standardized mean difference. The higher the SMD, the greater the magnitude of the difference between the groups. Magnitude of effect is considered to be small if SMD = 0.2, medium if SMD = 0.5, and large if SMD = 0.8.