Table 2.
Descriptive indicators of the measles IgG antibody titers by birth-year cohort according to vaccination scheme. Medellín, 2009.
| Birth-year cohort according to vaccination schemea | Meanb | Standard deviationb | Medianb | Geometric meanb | Kurtosis | P value (K-Smirnov)c | n |
|---|---|---|---|---|---|---|---|
| Cohort I (1944–1982) | 2838.5 | 2456.3 | 2184.4 | 1704.6 | 1.90 | 0.00 | 1125 |
| Cohort II (1983–1994) | 1133.3 | 1610.4 | 557.9 | 562.2 | −0.10 | 0.20 | 601 |
| Cohort III (1995–2003) |
1555.1 |
1831.7 |
860.1 |
802.1 |
0.13 |
0.05 |
372 |
| Total | 2122.5 | 2276.5 | 1196.7 | 1085.3 | 0.11 | 0.00 | 2098 |
a
Cohort I: born until 1982, start of massive immunization, natural exposure to the virus, or who received at least one dose of measles-containing vaccine (MCV); cohort II: born between 1983 and 1994: MCV in regular program plus “catch-up” campaigns (1984), Measles Mumps and Rubella-MMR (1995–1997) and MCV (2005); cohort III: born since 1995, 2-dose MMR.
b
Milli-international units per milliliter (mIU/mL).
c
Kolmogorov Smirnov normality test with Lilliefors correctionn: number of cases.