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Table.1 Baseline characteristics of high-risk occupational population with different vaccinations

From: Safety and immunogenicity of inactivated SARS-CoV-2 vaccine in high-risk occupational population: a randomized, parallel, controlled clinical trial

Characteristics Total
(n = 809)
0–14 group
(n = 270)
0–21 group
(n = 270)
0–28 group
(n = 269)
P
Gender      0.449
 Male 592 (73.2) 192 (71.1) 196 (72.6) 204 (75.8)  
 Female 217 (26.8) 78 (28.9) 74 (27.4) 65 (24.2)  
Age (years)      0.229
 < 40 463 (57.2) 144 (53.3) 156 (57.8) 163 (60.6)  
 ≥ 40 346 (42.8) 126 (46.7) 114 (42.2) 106 (39.4)  
Education level      0.335
 Junior high school or lower 74 (9.1) 31 (11.5) 25 (9.3) 18 (6.7)  
 Senior high school 37 (4.6) 10 (3.7) 12 (4.4) 15 (5.6)  
 College or higher 698 (86.3) 229 (84.8) 233 (86.3) 236 (87.7)  
Ethnicity      0.366a
 Han ethnicity 797 (98.5) 268 (99.3) 264 (97.8) 265 (98.5)  
 Other 12 (1.5) 2 (0.7) 6 (2.2) 4(1.5)  
Marital status      0.267
 Married 621 (76.8) 217 (80.4) 196 (72.6) 208 (77.3)  
 Unmarried 165 (20.4) 47 (17.4) 66 (24.4) 52 (19.3)  
 Divorced or widowed 23 (2.8) 6 (2.2) 8 (3.0) 9 (3.4)  
BMI (kg/m2)      0.848
 < 18.5 19 (2.3) 8 (3.0) 6 (2.2) 5 (1.8)  
 18.5– 33 3(41.2) 110 (40.7) 116 (43.0) 107 (39.8)  
 ≥ 24 457 (56.5) 152 (56.3) 148 (54.8) 157 (58.4)  
Influenza vaccination history     0.865
 No 549 (67.9) 180 (66.7) 184 (68.2) 185 (68.8)  
 Yes 260 (32.1) 90 (33.3) 86 (31.8) 84 (31.2)  
Occupation      0.991
 Public security officers 405 (50.1) 135 (50.0) 136 (50.4) 134 (49.8)  
 Airport ground staff 404 (49.9) 135 (50.0) 134 (49.6) 135 (50.2)  
Smoking      0.368
 No 545 (67.4) 190 (70.4) 181 (67.0) 174 (64.7)  
 Yes 264 (32.6) 80 (29.6) 89 (33.0) 95 (35.3)  
Drinking      0.906
 No 621 (76.8) 206 (76.3) 206 (76.3) 209 (77.7)  
 Yes 188 (23.2) 64 (23.7) 64 (23.7) 60 (22.3)  
Chronic diseases      0.978
 No 754 (93.2) 252 (93.3) 252 (93.3) 250 (92.9)  
 Yes 55 (6.8) 18 (6.7) 18 (6.7) 19 (7.1)  
  1. Results expressed as n (%)
  2. aFisher’s exact test