Birth Defects Cases by Time to Diagnosis and Birth Year
Hillsdale County, Michigan Resident Cases, 1992 - 2022

Year Time to Diagnosis
All Cases Under
1 Year
Between
1 & 2 Years
Total1,4141,181233
2010-201953846078
2000-200937631561
1992-199930624957
2022624814
2021645212
2020685711
2019887810
2018907713
2017544014
2016867412
2015433211
201457489
201336351
201236351
20112020-  
201028217
200935305
200839336
200748399
200630228
200532266
200439309
200340337
200236333
200134304
200043394
199940337
1998392910
199732275
199622148
1995443212
199443403
199350419
199236333


Average Birth Defects Cases Per Year, by Time to Diagnosis and Birth Year
Hillsdale County, Michigan Resident Cases, 1992 - 2022

Year Time to Diagnosis
All Cases Under
1 Year
Between
1 & 2 Years
Total47.139.47.8
2010-201953.846.07.8
2000-200937.631.56.1
1992-199938.331.17.1


Notes:

Conditions are reportable if identified within the first two years of a child's life. The frequencies at one year and at two years serve to indicate the time from the birth of the child to the diagnosis of the condition.

Birth defect statistics sometimes reflect trends related to data reporting or new testing. See Data Quality Considerations for further details.

- Quantity zero.
Source: Michigan Birth Defects Registry, Division for Vital Records & Health Statistics, Michigan Department of Health & Human Services
Reports Processed through October 28, 2025

Last Updated on November 10th, 2025