Figure 1Bayesian network: a simplified conceptual hierarchical framework for diarrhea.
Figure 2Frequency network showing posterior probabilities (%).
Figure 3Frequency network showing posterior probabilities (%) when there is evidence that the child belongs to a family in the poorest quintile.
Figure 4Frequency network showing posterior probabilities (%) of developing diarrhea when there is evidence that the child belongs to family in the poorest quintile, has poor sanitation conditions and is malnourished.
Table 1Logistic regression estimates and model summaries

Coefficient 
SE 
zvalue 
pvalue 
LR1 




Residual deviance = 2338.9, df = 2738, AIC = 2342.9 
Intercept 
1.32 
0.12 
10.86 
< 0.001 
Income 
0.14 
0.04 
3.43 
< 0.001 
LR2 
Residual deviance = 2336.5, df = 2737, AIC = 2342.5 
Intercept 
1.34 
0.12 
10.93 
< 0.001 
Income 
0.15 
0.04 
3.66 
< 0.001 
Sanitation 
0.18 
0.08 
2.23 
0.01 
LR3 




Residual deviance = 2333.1, df = 2736, AIC = 2341.1 
Intercept 
1.45 
0.14 
10.58 
< 0.001 
Income 
0.14 
0.04 
3.29 
< 0.001 
Sanitation 
0.19 
0.09 
2.68 
0.01 
Malnutrition 
0.21 
0.09 
2.31 
0.01 
Table 2CPT for terminal node diarrhea
Malnutrition 
Sanitation 
Income 
Diarrhea

No 
Yes 
No 
No 
Poorest 
0.83 
0.17 


Poorer 
0.90 
0.10 


Middle 
0.88 
0.12 


Richer 
0.84 
0.16 


Richest 
0.89 
0.11 

Yes 
Poorest 
0.86 
0.14 


Poorer 
0.90 
0.10 


Middle 
0.83 
0.17 


Richer 
0.79 
0.21 


Richest 
0.86 
0.14 
Yes 
No 
Poorest 
0.80 
0.20 


Poorer 
0.84 
0.16 


Middle 
0.79 
0.21 


Richer 
0.82 
0.18 


Richest 
0.94 
0.06 

Yes 
Poorest 
0.81 
0.19 


Poorer 
0.80 
0.20 


Middle 
0.79 
0.21 


Richer 
0.88 
0.12 


Richest 
0.78 
0.22 
Table 3CPT for sanitation
Income 
Sanitation

No 
Yes 
Poorest 
0.89 
0.11 
Poorer 
0.67 
0.33 
Middle 
0.67 
0.33 
Richer 
0.58 
0.42 
Richest 
0.68 
0.32 
Table 4MPT for income
Income 
Proportion 
Poorest 
0.20 
Poorer 
0.22 
Middle 
0.25 
Richer 
0.18 
Richest 
0.15 
Table 5CPT for malnutrition
Sanitation 
Income 
Malnutrition

No 
Yes 
No 
Poorest 
0.60 
0.40 

Poorer 
0.88 
0.12 

Middle 
0.63 
0.37 

Richer 
0.62 
0.38 

Richest 
0.77 
0.23 
Yes 
Poorest 
0.63 
0.37 

Poorer 
0.87 
0.13 

Middle 
0.67 
0.33 

Richer 
0.70 
0.30 

Richest 
0.77 
0.23 
Table 6Comparison frequencies (%) from the data and the adjusted frequencies (BN)
Factors 
Empirical 
Adjusted (Bf 
Sanitation 
Yes 
31.24 
30.07 
No 
68.76 
69.93 
Malnutrition 


Yes 
30.62 
29.25 
No 
69.38 
70.75 
Diarrhea 
Yes 
15.36 
14.97 
No 
84.64 
85.03 