Table 2. Conditional probability distribution table of the BBN for estimating HFMD outbreak risk.

Variables name	Corresponding categorical values	Probability of differentrisk levels			Variables	Corresponding categorical values	Probability of different risk levels
		0	1	2			0	1	2
The rate of virus EV71 detection in mild case for children aged 0–5 years old	Low	0.348	0.214	0.1	Average Relative Humidity	Low	0.13	0.214	0.2
	Lower Intermediate	0.087	0.286	0.2		Lower Intermediate	0.261	0.143	0.2
	Intermediate	0.174	0.071	0.15		Intermediate	0.261	0.071	0.1
	Upper Intermediate	0.043	0.214	0.3		Upper Intermediate	0.304	0.286	0.25
	High	0.348	0.214	0.25		High	0.043	0.286	0.25
The rate of virus EV71 detection in mild case for children aged 3–5 years old	Low	0.426	0.335	0.278	Average Temperature	Low	0.043	0.214	0.35
	Lower Intermediate	0.288	0.244	0.253		Lower Intermediate	0.043	0.071	0.3
	Upper Intermediate	0.158	0.208	0.318		Intermediate	0.261	0.357	0.15
	High	0.129	0.213	0.151		Upper Intermediate	0.174	0.286	0.1
Average air pressure	Low	0.226	0.274	0.146		High	0.478	0.071	0.1
	Lower Intermediate	0.183	0.172	0.176	Average Wind Speed	Low	0.043	0.214	0.15
	Intermediate	0.161	0.172	0.272		Lower Intermediate	0.261	0.143	0.2
	Upper Intermediate	0.241	0.172	0.26		Intermediate	0.087	0.286	0.25
	High	0.19	0.208	0.146		Upper Intermediate	0.261	0.286	0.15
Urbanization Level	Low	0.226	0.274	0.174		High	0.348	0.071	0.25
	Lower Intermediate	0.212	0.208	0.198	Temperature Difference	Low	0.217	0.143	0.2
	Intermediate	0.248	0.203	0.291		Lower Intermediate	0.217	0.143	0.2
	Upper Intermediate	0.154	0.142	0.217		Intermediate	0.304	0.214	0.25
	High	0.161	0.172	0.121		Upper Intermediate	0.174	0.357	0.2
Maximum Wind Speed	Low	0.226	0.274	0.174		High	0.087	0.143	0.15
	Lower Intermediate	0.212	0.208	0.198
	Intermediate	0.248	0.203	0.291
	Upper Intermediate	0.154	0.142	0.217
	High	0.161	0.172	0.121