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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