Table 2.

The long-term trends of rubella incidence in 26 age groups from 2004 to 2021.

Age groups	Trends	AAPC (%)	AAPC 95%CI (%)		Z	P-value
			Lower CI	Upper CI
0–	Decrease	−14.35	−22.67	−5.12	−2.97	0.003
1–	Decrease	−18.46	−25.86	−10.32	−4.2	<0.001
2–	Decrease	−20.98	−27.73	−13.59	−5.17	<0.001
3–	Decrease	−22.78	−29.64	−15.24	−5.44	<0.001
4–	Decrease	−25.2	−32.77	−16.78	−5.33	<0.001
5–	Decrease	−28.32	−37.95	−17.19	−4.52	<0.001
6–	Decrease	−29.96	−39.8	−18.5	−4.61	<0.001
7–	Decrease	−18.67	−28.82	−7.07	−3.04	0.002
8–	Decrease	−22.25	−30.02	−13.62	−4.68	<0.001
9–	Decrease	−16.96	−24.25	−8.97	−3.96	<0.001
10–	Stable	10.12	−35.01	86.59	0.36	0.72
15–	Stable	−16.5	−62.94	88.15	−0.44	0.664
20–	Stable	22.55	−23.83	97.16	0.84	0.402
25–	Stable	5.76	−16.08	33.29	0.47	0.635
30–	Stable	4.34	−10.12	21.13	0.56	0.577
35–	Stable	5.05	−9.89	22.48	0.63	0.529
40–	Stable	−0.07	−6.67	7	−0.02	0.982
45–	Stable	−1.04	−14.3	14.27	−0.14	0.887
50–	Decrease	−8.27	−14.59	−1.47	−2.37	0.018
55–	Stable	−6.7	−16.6	4.39	−1.21	0.226
60–	Stable	−7.8	−15.77	0.93	−1.76	0.078
65–	Stable	−6.4	−22.04	12.38	−0.71	0.478
70–	Decrease	−12.39	−19.5	−4.64	−3.06	0.002
75–	Decrease	−13.13	−19.56	−6.19	−3.59	<0.001
80–	Stable	−9.24	−19.34	2.13	−1.61	0.107
85–	Stable	−7.12	−30.27	23.73	−0.5	0.614