Incidence and Time Trends of Type 2 Diabetes Mellitus among Adults in Zhejiang Province, China, 2007-2017
Table 3
Incidence rate ratios (IRR) of type 2 diabetes in relation to calendar year and demographic factors.
Characteristic
Males
Females
All
IRR
95% CI
IRR
95% CI
IRR
95% CI
Year
2007
Ref.
Ref.
Ref.
2008
1.165
1.137-1.194
1.148
1.122-1.176
1.157
1.137-1.176
2009
1.532
1.497-1.567
1.428
1.397-1.460
1.479
1.455-1.502
2010
1.864
1.823-1.905
1.713
1.677-1.750
1.786
1.758-1.813
2011
2.050
2.007-2.095
1.854
1.816-1.893
1.949
1.920-1.978
2012
2.138
2.094-2.184
1.892
1.853-1.932
2.011
1.981-2.040
2013
2.297
2.249-2.345
1.934
1.895-1.974
2.108
2.077-2.139
2014
2.326
2.278-2.375
1.913
1.874-1.952
2.110
2.080-2.141
2015
2.027
1.988-2.066
1.634
1.604-1.665
1.821
1.797-1.845
2016
1.870
1.835-1.906
1.462
1.434-1.489
1.657
1.635-1.679
2017
1.880
1.844-1.916
1.378
1.353-1.405
1.616
1.594-1.637
Age
20-29 years
0.037
0.036-0.038
0.034
0.033-0.035
0.035
0.035-0.036
30-39 years
0.138
0.136-0.140
0.086
0.085-0.087
0.113
0.112-0.115
40-49 years
0.366
0.362-0.371
0.260
0.256-0.263
0.316
0.313-0.319
50-59 years
0.670
0.662-0.679
0.708
0.700-0.717
0.688
0.682-0.694
60-69 years
0.880
0.869-0.892
1.107
1.094-1.120
0.986
0.977-0.994
70-79 years
0.973
0.960-0.986
1.211
1.196-1.227
1.087
1.077-1.097
≥80 years
Ref.
Ref.
Ref.
Sex
Males
1.083
1.079-1.088
Females
Ref.
Residence area
Urban
1.079
1.072-1.085
0.929
0.923-0.935
1.005
1.001-1.009
Rural
Ref.
Ref.
Ref.
Multivariable Poisson regression model with the calendar year as a dummy variable. IRR: incidence rate ratio; CI: confidence interval; Ref.: reference.