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. 2013 Oct 4;7:1007–1023. doi: 10.2147/PPA.S51299

Table 2.

Definition of covariates

Parameter Reference
Age/age at diagnosis
Duration of type 2 diabetes
Sex Male
College degree + Less than college degree
Income
 €20,000 to <€50,000 <€20,000
 ≥€50,000
 ≥Decline to answer
Employed full-time/part-time/self-employed Unemployed
Currently drinking alcohol No current alcohol use
Currently smoking Not a current smoker
Currently exercising No current exercise
Body mass index
 Overweight Normal/underweight
 Obese
 Declined
Charlson comorbidity index
Complications experienced
 Macular edema or diabetic retinopathy Not experienced
 Neuropathic pain
 Kidney disease
 Foot or leg ulcer
Prescribing physician, general practitioner Specialist
Strongly agree/agree with being afraid of needles Neutral/disagree/strongly disagree with being afraid of needles
HbA1c ≤7%
 >7%
 Unknown
Fasting glucose
 ≥130 mg/dL ≤130 mg/dL
 Unknown
Very/extremely satisfied with diabetes treatment Less satisfaction with diabetes treatment

Note: Models representing uncontrolled individuals did not include HbA1c levels or fasting glucose as covariates.