Table 3.

Comparison of predicted hemorrhagic fever with renal syndrome values and actual values for Hebei Province. China, during January–December 2010^*

No. cases	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Actual value	7	16	32	22	23	17	10	11	7	15	23	35
Predictive value	15	23	42	31	33	48	14	10	29	19	15	24
95% CL of PV	5–47	7–76	12–49	8–117	8–132	11–204	3–63	2–46	6–142	4–100	3–84	4–138

^*CL = confidence level; PV = predicted value.