From: The role of schools in the spread of mumps among unvaccinated children: a retrospective cohort study
School | Response house-holds (%) | Households with secondary school pupils1 (%) | Mean number of children per household2 (range) | Children in study | Mean age3 (SD) | Children living outside study village4 (%) | MMR vaccination status5 | ||
---|---|---|---|---|---|---|---|---|---|
 |  |  |  |  |  |  | Unvaccinated (%) | MMR1 (%) | MMR2 (%) |
A | 124 (55) | 68 (55) | 4,1 (1-12) | 504 | 10,3 (± 5,3) | 220 (44) | 443 (88) | 31 (6) | 30 (6) |
B | 93 (50) | 37 (40) | 3,7 (1- 9) | 344 | 9,3 (± 5,4) | 110 (34) | 295 (86) | 31 (9) | 18 (5) |
C | 97 (63) | 48 (49) | 2,8 (1- 7) | 272 | 9,7 (± 4,9) | 18 (7) | 28 (10) | 109 (40) | 135 (50) |
D | 37 (37) | 9 (24) | 2,0 (1- 4) | 71 | 9,5 (± 4,8) | 0 (0) | 3 (4) | 36 (51) | 32 (45) |
Total | 351 (54) | 162 (46) | 3,3 (1-12) | 1191 | 9,8 (± 5,2) | 348 (29) | 769 (65) | 207 (17) | 215 (18) |