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Table 3 Diphtheria protectivity (≥0.1 IU/mL) rates of subjects by demographic characteristics

From: Seroprevalence of diphtheria toxoid IgG antibodies in the Malaysian population

  All Children (2–17 years old) Adults (18–60 years old)
Variable Protected Susceptible Protected Susceptible Protected Susceptible
  n % (95% CI) n % (95% CI) n % (95% CI) n % (95% CI) n % (95% CI) n % (95% CI)
Overall 1424 42.9 (41.3, 44.6) 1893 57.1 (55.4, 58.7) 629 61.9 (58.9,64.8) 387 38.1 (35.2, 41.1) 795 34.6 (32.6, 36.5) 1506 65.4 (63.5, 67.4)
Sociodemographic
Gender   **         *   
 Male 645 47.3 (44.6,49.9) 719 52.7 (50.1, 55.4) 331 62.5 (58.2, 66.5) 199 37.5 (33.5, 41.8) 314 37.6 (34.4, 41.0) 520 62.4 (59.0, 65.6)
 Female 779 39.9 (37.7, 42.1) 1174 60.1 (57.9, 62.3) 298 61.3 (56.9, 65.5) 188 38.7 (34.5, 43.1) 481 32.8 (30.4, 35.2) 986 67.2 (64.8, 69.6)
Race   **         **   
 Malay 890 40.2 (38.2, 42.3) 1323 59.8 (57.7, 61.8) 405 595 (55.7, 63.1) 276 40.5 (36.9, 44.3) 485 31.7 (29.4, 34.0) 1047 68.3 (66.0, 70.60)
 Chinese 88 40.8 (34.5, 47.5) 129 59.2 (52.5, 65.5) 30 56.6 (43.1, 69.6) 23 43.4 (30.4, 56.9) 59 35.8 (28.8, 43.4) 106 64.2 (56.6, 71.2)
 Indian 181 53.4 (48.1, 58.6) 158 46.6 (41.4, 51.9) 72 72.7 (63.10, 80.6) 27 27.3 (19.4, 36.9) 109 45.4 (39.2, 51.8) 131 54.6 (48.2, 60.8)
 Bumiputera Sabah 175 48.7 (43.6, 53.9) 184 51.3 (46.1, 56.4) 80 64.5 (56.4, 73.2) 44 35.5 (26.8, 43.6) 95 40.4 (34.3, 46.8) 140 59.6 (53.2, 65.7)
 Bumiputera Sarawak 77 48.7 (41.0, 56.5) 81 51.3 (43.5, 59) 36 75 (60.9, 85.2) 12 25.0 (14.8, 39.1) 41 37.3 (28.8, 46.7) 69 62.7 (53.3, 71.2)
 Others 12 40.0 (24.3, 58.1) 18 60.0 (41.9, 75.7) 6 54.5 (26.8, 79.7) 5 45.5 (20.3,73.2) 6 31.6 (14.9, 54.9) 13 68.4 (45.1, 85.1)
Age groupa
2–6 214 66.3 (60.9, 71.2) 109 33.7 (28.8, 39.1)         
7–12 257 70.2 (65.3, 74.7) 109 29.8 (25.3, 34.7)         
13–17 158 48.3 (42.9, 53.7) 169 51.7 (46.3, 57.1)         
18–30 341 35.6 (32.7, 38.7) 616 64.4 (61.3, 67.3)         
31–40 193 33.2 (29.5, 37.2) 388 66.8 (62.8, 70.5)         
41–50 148 33.4 (29.2, 37.9) 295 66.6 (62.1, 70.8)         
51–60 113 35.3 (30.3, 40.7) 207 64.7 (59.3, 69.7)         
  1. * Pearson’s Chi-Square test p-value <0.05
  2. ** Pearson’s Chi-Square test p-value <0.001
  3. a Extended Mantel-Haenszel chi square for linear trend= 178.1, p-value <0.001