Incidence and Time Trends of Type 2 Diabetes Mellitus among Adults in Zhejiang Province, China, 2007-2017

Table 2

Mean incidence rate of type 2 diabetes, 2007-2017 (per 100,000 person-years).

Age at diagnosis (years)	Number of cases	Person-years	Incidence	95% CI
Males
20-29	6,733	19,552,005	34.44	33.62-35.27
30-39	28,621	22,176,495	129.06	127.57-130.56
40-49	84,735	24,312,230	348.53	346.19-350.88
50-59	126,342	19,725,122	640.51	636.99-644.05
60-69	113,859	13,507,232	842.95	838.06-847.86
70-79	67,213	7,238,313	928.57	921.57-935.62
≥80	30,126	3,030,700	994.03	982.83-1005.32
≥20	457,629	109,542,097	417.77	416.56-418.98
Standardized incidence rate	718,216	244,966,073	293.19	292.51-293.87
Females
20-29	5,571	19,282,194	28.89	28.14-29.66
30-39	16,283	22,360,608	72.82	71.71-73.95
40-49	53,656	24,157,195	222.11	220.24-224.00
50-59	114,419	18,950,805	603.77	600.28-607.28
60-69	122,933	13,066,014	940.86	935.61-946.14
70-79	75,658	7,349,879	1029.38	1022.06-1036.74
≥80	33,620	3,938,037	853.72	844.62-862.90
≥20	422,140	109,104,732	386.91	385.75-388.08
Standardized incidence rate	635,876	235,141,346	270.42	269.76-271.09
Overall
20-29	12,304	38,834,199	31.68	31.13-32.25
30-39	44,904	44,537,102	100.82	99.89-101.76
40-49	138,391	48,469,425	285.52	284.02-287.03
50-59	240,761	38,675,928	622.51	620.02-625.00
60-69	236,792	26,573,246	891.09	887.51-894.69
70-79	142,871	14,588,192	979.36	974.29-984.45
≥80	63,746	6,968,737	914.74	907.66-921.87
≥20	879,769	218,646,829	402.37	401.53-403.21
Standardized incidence rate	1,352,605	480,107,419	281.73	281.26-282.20

Age-standardized to the 6th population census in Zhejiang Province, 2010. CI: confidence interval.