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Table 1 Association between socio-demographic characteristics and medical/ medication history and seroprevalence of measles antibodies (measles IgG titre), (n = 1541)

From: Serological assessment of the establishment of herd immunity against measles in a health district in Malaysia

Characteristics

Seroprevalence of measles IgG titre

N(%)

Positive titrea (95% CI)

Indeterminate and negative titresb (95% CI)

Crude odds ratio (95% CI)

p value

Total

1541(100)

87%

(85–89)

13%

(11–15)

   

Age (year)

 [6–9]

298 (19.3)

90%

(87–94)

10%

(6–13)

1.00

  

 15–24

489 (31.7)

74%

(70–78)

26%

(22–30)

0.31

(0.20 – 0.47)

0.0001

 45–54

754 (48.9)

94%

(92–96)

6%

(4–8)

1.74

(1.07 – 2.84)

0.027

Gender

 [Male]

721 (46.8)

85%

(83–88)

15%

(12–17)

1.00

  

 Female

820 (53.2)

88%

(86–91)

12%

(9–14)

1.30

(0.97 – 1.75)

0.083

Ethnicity

 [Non-Malay]

614 (39.8)

89%

(87–92)

11%

(8–13)

1.00

  

 Malay

927 (60.2)

86%

(83–88)

14%

(12–17)

0.73

(0.54–1.00)

0.050

Education Level

 [Lower]

1144 (74.2)

88%

(87–90)

12%

(10–13)

1.00

  

 Higher

397 (25.8)

83%

(79–87)

17%

(13–21)

0.65

(0.47–0.89)

0.008

Household income

 [Lower]

1157 (75.1)

86%

(84–88)

14%

(12–16)

1.00

  

 Higher

384 (24.9)

89%

(86–92)

11%

(8–14)

1.29

(0.90–1.85)

0.170

Place of birth

 [Others]

839 (54.4)

89%

(87–91)

11%

(9–13)

1.00

  

 Seremban

702 (45.6)

85%

(82–88)

15%

(12–18)

0.71

(0.53–0.96)

0.024

Locality of place of birth

 [Urban]

1017 (66.0)

86%

(84–88)

14%

(12–16)

1.00

  

 Rural

524 (34.0)

89%

(86–92)

11%

(8–14)

1.30

(0.94–1.81)

0.110

Locality of health clinics attended

 [Urban]

1258 (81.6)

87%

(86–89)

13%

(11–14)

1.00

  

 Rural

283 (18.4)

86%

(81–90)

14%

(10–19)

0.85

(0.59–1.24)

0.404

Medical problems

 [No]

941 (61.1)

84%

(81–86)

16%

(14–19)

1.00

  

 Yes

600 (38.9)

92%

(90–94)

8%

(6–10)

2.22

(1.57–3.12)

0.0001

Medication history

 [No]

976 (63.3)

84%

(81–86)

16%

(14–19)

1.00

  

 Yes

565 (36.7)

93%

(90–95)

7%

(5–10)

2.41

(1.68–3.43)

0.0001

  1. [] Reference group
  2. aPositive titre: > 220 IU/ml
  3. bIndeterminate titre 120–220 IU/ml and negative titre < 120 IU/ml