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Table 2 The proportion (%) of seropositive rates across different age groups

From: Seroprevalence of an antibody against diphtheria, tetanus, and pertussis among the elderly in Khon Kaen, Thailand

Age (year)

Total

Seropositivity

Diphtheria

Tetanus

Pertussis

N

%

95% (CI)

N

%

95% (CI)

N

%

95% (CI)

61–65

104

101

97.1

93.8–100

90

86.5

79.8–93.2

53

51.0

41.2–60.8

66–70

99

96

97.0

93.5–100

83

83.8

76.4–91.2

57

57.6

47.6–67.5

71–75

92

88

95.7

91.4–99.9

72

78.3

69.7–86.9

48

52.2

41.8–62.6

76–80

70

69

98.6

95.8–100

63

90.0

82.8–97.2

44

62.9

51.3–74.4

81+

65

64

98.5

95.4–100

51

78.5

68.3–88.7

38

58.5

46.2–70.7

Total

430

418

97.2

95.6–98.8

359

83.5

79.9–87.1

240

55.8

51.0–60.6

  1. CI confidence interval, N number of patients