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Table 1 The Demographic Characteristics and serological prevalence of DENV in each group

From: Epidemiological survey and screening strategy for dengue virus in blood donors from Yunnan Province

Characteristics Only Anti-IgG reactive Only Anti-IgM reactive Anti-IgG And Anti-IgM reactive Non-reactive Total Serological prevalence (%) χ2 and P values
Donors Status
 First-Time 267 28 31 809 1135 (50.35%) 28.72 5.635, 0.018
 Repeat 217 37 18 847 1119 (49.65%) 24.30  
Gender
 Male 331 39 29 1033 1432 (63.53%) 27.86 3.577, 0.059
 Female 153 26 20 623 822 (36.47%) 24.21  
Age Group
 18 ~ 25 84 10 6 294 394 (17.48%) 25.38 9.337, 0.053
 26 ~ 35 196 24 18 567 805 (35.71%) 29.57  
 36 ~ 45 124 18 19 441 602 (26.71%) 26.74  
 46 ~ 55 78 13 6 344 441 (19.57%) 22.00  
 56 ~ 60 2 0 0 10 12 (0.53%) 16.67  
Occupation
 Farmers 76 9 12 188 285 (12.64%) 34.03 25.335, 0.001
 Workers 34 3 3 116 156 (6.92%) 25.64  
 Students 8 1 1 25 35 (1.55%) 28.57  
 Soldiers 3 0 0 8 11 (0.49%) 27.27  
 Teachers 4 0 0 34 38 (1.69%) 10.53  
 Civil Servants 13 3 0 86 102 (4.52%) 15.69  
 Medical staff 27 3 2 122 154 (6.83%) 13.01  
 Employee 44 6 5 191 246 (10.91%) 22.36  
 Others 275 40 26 886 1227 (54.44%) 27.79  
Education
 BHSa 239 30 33 639 941 (41.75%) 32.09 31.3, < 0.001
 HSADb 66 9 4 210 289 (12.82%) 27.33  
 Bachelor 43 8 1 227 279 (12.38%) 18.64  
 Master 3 0 0 10 13 (0.57%) 23.08  
 Others 133 18 11 570 732 (32.48%) 22.13  
Ethnicity
 Han 240 35 27 885 1187 (52.66%) 25.44 14.36, 0.026
 Bai 2 1 0 17 20 (0.89%) 15.00  
 Miao 6 0 0 12 18 (0.80%) 33.33  
 Dai 73 7 8 188 276 (12.24%) 31.88  
 Buliang 14 1 1 18 34 (1.51%) 47.06  
 Hani 70 11 3 248 332 (14.73%) 25.30  
 Other 79 10 10 288 387 (17.17%) 25.58  
Total 484 65 49 1656 2254 26.53  
  1. aBHS Below High School
  2. bHSAD High School and Associate Degree