Table 4.
Minimum community-based incidence rate (MCBIR) of admitted severe malnutrition cases per 1000 child-years at risk (CYAR), by year of study, among southern Mozambican children aged <5 years, Manhiça District Hospital (from January 2001 to December 2010)
| Calendar year | Population | Cases | Time at risk (CYAR) | MCBIR (cases per 1000 CYAR) | IRR | 95 % CI | P |
|---|---|---|---|---|---|---|---|
| 2001 | 8525 | 212 | 6453·1 | 32·85 | 1·00 | – | <0·0001 |
| 2002 | 15 139 | 171 | 9115·6 | 18·76 | 0·62 | 0·50, 0·77 | |
| 2003 | 16 520 | 298 | 12 329 | 24·17 | 0·92 | 0·75, 1·12 | |
| 2004 | 16 474 | 199 | 12 514 | 15·90 | 0·67 | 0·54, 0·84 | |
| 2005 | 18 269 | 222 | 13 720 | 16·18 | 0·67 | 0·53, 0·83 | |
| 2006 | 18 631 | 182 | 14 164 | 12·85 | 0·52 | 0·41, 0·65 | |
| 2007 | 19 005 | 190 | 14 493 | 13·11 | 0·50 | 0·40, 0·63 | |
| 2008 | 19 364 | 189 | 14 792 | 12·78 | 0·49 | 0·39, 0·61 | |
| 2009 | 19 412 | 183 | 14 867 | 12·31 | 0·46 | 0·36, 0·58 | |
| 2010 | 19 710 | 112 | 15 061 | 7·44 | 0·27 | 0·21, 0·35 | |
| TOTAL | 51 778 | 1958 | 127 507 | 15·36 |
IRR, incidence rate ratio.
P from negative binomial regression model with random effects using the likelihood-ratio test.
NB: convergence was not achieved; estimates are based on iterated maximization.