Table 4 |
||||||||
| Results of the clustered lot quality assurance sampling surveys*to monitor yellow fever vaccination coverage before the end of the campaign, Sierra Leone, 28–29 November 2009 | ||||||||
| District | Lot | N | Vaccination Card§ | Verbal History | ||||
| U | D | SE | U | D | SE | |||
| Western Area Rural | 1 | 50 | 2 | A | 0.02 | 1 | A | 0.02 |
| Western Area Urban | 2 | 50 | 4 | A | 0.05 | 4 | A | 0.05 |
| Kambia | 3 | 50 | 0 | A | 0.00 | 0 | A | 0.00 |
| 4 | 50 | 0 | A | 0.00 | 0 | A | 0.00 | |
| District Total | 100 | 0 | A | 0-00 | 0 | A | 0.00 | |
| Koinadugu | 5 | 50 | 6 | A | 0.06 | 4 | A | 0.05 |
| 6 | 50 | 10 | R | 0.07 | 8 | R | 0.08 | |
| District Total | 100 | 16 | R | 0.05 | 12 | A | 0.05 | |
| Port Loko | 7 | 50 | 18 | R | 0.19 | 14 | R | 0.17 |
| 8 | 50 | 7 | A | 0.12 | 7 | A | 0.12 | |
| 9 | 50 | 11 | R | 0.09 | 7 | A | 0.04 | |
| District Total | 150 | 36 | R | 0.08 | 28 | R | 0.07 | |
| Tonkolili | 10 | 50 | 2 | A | 0.02 | 1 | A | 0.02 |
| 11 | 50 | 2 | A | 0.02 | 2 | A | 0.02 | |
| 12 | 50 | 1 | A | 0.02 | 0 | A | 0.00 | |
| District Total | 100 | 5 | A | 0.01 | 3 | A | 0.01 | |
N: sample size; U: number of Unvaccinated in the sample; D: Decision; A: Accepted; R: Rejected; SE: Standard Error of the distribution of the vaccination variable between the clusters in the lots.
* Sampling plans used: UT = 90% and LT = 75%, with d = 7 when N = 50 (5x10); d = 15 when N = 100 (10x10); d = 25 when N = 150 (15x10).
§ Used to take operational decisions in the field before the end of the campaign.
Pezzoli et al. BMC Public Health 2012 12:415 doi:10.1186/1471-2458-12-415
