Introduction
Contribution
Methods
Data source
Dependent variable
Independent variables
Statistical software
Statistical models
Poisson regression model
Negative binomial regression model (NB)
Zero-inflated poisson (ZIP) regression model
Zero-inflated negative binomial (ZINB) regression model
The hurdle poisson model
The hurdle negative binomial model
Assessing model adequacy
Result
Number of deaths | Frequency | Percent |
---|---|---|
0 | 7720 | 53.7 |
1 | 3314 | 23.1 |
2 | 1773 | 12.3 |
3 | 798 | 5.6 |
4 | 413 | 2.9 |
5 | 198 | 1.4 |
6 | 76 | 0.5 |
7 | 78 | 0.5 |
Total | 14,370 | 100 |
Mean | 0.90 | |
Variance | 1.67 |
Socio-demographic and economic characteristics of under-five mortality in Ethiopia
Model selection criteria
Model | Def. | AIC | BIC | Deviance |
---|---|---|---|---|
Poisson | 32 | 30218.3 | 30460.7 | 30154.3 |
NB | 33 | 30198.2 | 30448.1 | 30132.2 |
ZIP | 50 | 29746.6 | 30125.3 | 29646.6 |
ZINB | 51 | 29737.1 | 30123.3 | 29635.1 |
HP | 50 | 29457 | 29828 | 29359 |
HNB | 51 | 29427 | 29813.2 | 29325 |
Observed | Poisson | NB | ZIP | ZINB | HP | HNB | |
---|---|---|---|---|---|---|---|
No of zeros | 7720 | 7535.94 | 7629.34 | 7878.27 | 7891.22 | 7720 | 7720 |
No of under-five death | Observed probability | Predicted probability | |||||
---|---|---|---|---|---|---|---|
Poisson | NB | ZIP | ZINB | HP | HNB | ||
0 | 0.5370 | 0.5244 | 0.5309 | 0.5482 | 0.5491 | 0.5370 | 0.5370 |
1 | 0.2310 | 0.2596 | 0.2551 | 0.2189 | 0.2165 | 0.2292 | 0.2313 |
2 | 0.1230 | 0.1134 | 0.1105 | 0.1195 | 0.1207 | 0.1239 | 0.1225 |
3 | 0.0560 | 0.0517 | 0.0507 | 0.0598 | 0.0603 | 0.0597 | 0.0587 |
4 | 0.0290 | 0.0245 | 0.0249 | 0.0287 | 0.0287 | 0.0275 | 0.0288 |
5 | 0.0140 | 0.0125 | 0.0128 | 0.0135 | 0.0134 | 0.0124 | 0.0136 |
6 | 0.0050 | 0.0064 | 0.0068 | 0.0063 | 0.0062 | 0.0056 | 0.0055 |
7 | 0.0050 | 0.0033 | 0.0037 | 0.0029 | 0.0028 | 0.0025 | 0.0064 |