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CompletedNCT01184768Updated Jul 20, 2011

HBA1c and Diagnosis of Type 2 Diabetes

An observational study in Type 2 Diabetes, sponsored by University of Tromso. Completed at 1 site in Norway. Open to participants aged 20 Years to 80 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2011-07-20.

Sponsored by University of Tromso · Observational

Study type
Observational
Model
Cohort
Time perspective
Cross-sectional
Enrollment
3,509
Ages
20 Years to 80 Years
Sex
All
01

Study summary

Following the 6th Tromso study subjects with HbA1c > 5.7 plus a subsample of subjects with lower hba1c values will be invited to an oral glucose tolerance test to see the predictive value of HBA1c in the diagnosis of type 2 diabetes.

02

Conditions studied

  • Type 2 Diabetes

Keywords

  • type 2 diabetes
  • HbA1c
  • vitamin D
  • diagnosis
03

In context

Diabetes Mellitus

10,925 studies on the registry are indexed under Diabetes Mellitus; 1,319 are open to participants now.

This study's enrollment of 3,509 is above the median of 233 across 2,220 observational studies indexed under Diabetes Mellitus.

Browse Diabetes Mellitus studies →

Lead sponsor

University of Tromso is the lead sponsor of 61 studies on the registry; 7 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
20 Years to 80 Years
Sexes eligible
All
Accepts healthy volunteers
Yes
Sampling method
Non-probability sample

Study population

random sample of subjects living in Tromso and who participated in the 6 th Tromsø study

Inclusion criteria

  • participated in the 6 Tromso study

Exclusion criteria

Exclusion Criteria:

  • type 2 diabetes
05

Study design

Observational model
Cohort
Time perspective
Cross-sectional
Enrollment
3,509 participants (actual)
Biospecimen retention
Samples without dna

Groups and cohorts

  • participants in the 6th tromsø study
06

What researchers measure

Primary outcomes

  1. Number of subjects with new diagnosis of type 2 diabetes

    Time frame: Up to 2 years after participation in the 6th Tromso study

Secondary outcomes

  1. Number of subjects with new diagnosis of impaired glucose tolerance

    Time frame: Up to 2 years after participation in the 6th Tromso study

  2. Number of subjects with new diagnosis of impaired fasting glucose

    Time frame: Up to 2 years after participation in the 6th Tromso study

  3. Effect of vitamin D status on glucose tolerance

    Time frame: Up to 2 years after participation in the 6th Tromso study

07

Study locations

1 site
  • University Hospital of North Norway
    Tromsø, 9038, Norway
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 20, 2011, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT01184768
Lead sponsor
University of Tromso
First posted
Aug 19, 2010
Start date
Jan 2008
Primary completion
Oct 2010
Completion
Nov 2010
Last update
Jul 20, 2011

Study contacts

rolf jorde, md
principal investigator · University of Tromso

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jul 2011. You cannot join it, but the record below documents what was studied.

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