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Table 1 Demographic characteristics of the persons examined in this studya

From: Childhood MMR vaccination and the incidence rate of measles infection: a ten year longitudinal cohort study of American children born in the 1990s

Parameter Examined

MMR Vaccinated Cohortb

(n = 32,870)

Unvaccinated Cohortc

(n = 43,538)

Person-Years

224,492

434,637

Gender (%)

 Male

17,468 (53.14%)

23,202 (53.29%)

 Female

15,402 (46.86%)

20,336 (46.71%)

Date of Birth

 mean ± std. (range)

1995 ± 2.5

(1990–1999)

1994 ± 2.5

(1990–1999)

Number Diagnosed with Measles

(ICD-9 Code: 055xxx)

9

76

  1. ICD-9 International Code of Disease, 9th revision, MMR Measles, mumps, rubella, std. Standard deviation
  2. a All persons examined in this study were enrolled from their date of birth for 120 consecutive months. All persons had non-changing dates of birth and gender status. All persons had ≥10 outpatient office visits
  3. b Persons received only 1 dose of MMR vaccine and includes only persons diagnosed with measles post-MMR vaccine administration (43 persons were excluded with measles diagnoses pre-MMR vaccine administration and 3 persons were diagnosed measles within 30 days of vaccine administration, which are most likely measles vaccine-associated adverse events)
  4. c Persons received no doses of any measles-containing vaccine
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BMC Pediatrics

ISSN: 1471-2431

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