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Table 3 Bivariate results from a random intercept Linear Mixed Model comparing mean Hgb A1c levels

From: Association between socio-economic status and hemoglobin A1c levels in a Canadian primary care adult population without diabetes

 

Difference in mean Hgb A1c (95% CI)

P-value

Income (Quintile)

  

 • Lowest income (Q1) (Reference)

---

---

 • Low income (Q2)

-0.00 (-0.04 to 0.03)

0.9

 • Mid income (Q3)

-0.03 (-0.06 to 0.003)

0.07

 • High income (Q4)

-0.04 (-0.08 to 0.01)

0.01

 • Highest income (Q5)

-0.04 (-0.07 to 0.01)

0.005

Material deprivation (Quintile)

  

 • Most deprived (Q5) (Reference)

---

---

 • Deprived (Q4)

-0.05 (-0.09 to 0.01)

0.008

 • Neutral (Q3)

-0.03 (-0.07 to 0.01)

0.1

 • Less deprived (Q2)

-0.05 (-0.09 to 0.01)

0.005

 • Least deprived (Q1)

-0.05 (-0.09 to 0.02)

0.003

Social deprivation (Quintile)

  

 • Most deprived (Q5) (Reference)

---

---

 • Deprived (Q4)

0.03 (-0.001 to 0.06)

0.06

 • Neutral (Q3)

0.02 (-0.01to 0.05)

0.3

 • Less deprived (Q2)

0.00 (-0.03 to 0.04)

0.8

 • Least deprived (Q1)

0.02 (-0.01 to 0.06)

0.2

Combined material and social deprivation (Quintile)

  

 • Most deprived (Q5) (Reference)

---

---

 • Deprived (Q4)

-0.01(-0.05 to 0.02)

0.5

 • Neutral (Q3)

-0.02 (-0.06 to 0.02)

0.3

 • Less deprived (Q2)

-0.02 (-0.06 to 0.02)

0.3

 • Least deprived (Q1)

-0.02 (-0.06 to 0.01)

0.2

LDL*

0.02 (0.01 to 0.03)

0.0002

HDL*

-0.07 (-0.09 to 0.05)

<0.0001

Triglycerides*

0.04 (0.03 to 0.05)

<0.0001

Obese†

0.07 (0.04 to 0.09)

<0.0001

BMI‡

0.01 (0.004 to 0.01)

<0.0001

SBP **

0.00 (0.001 to 0.003)

<0.0001

DBP **

0.00 (0.01 to 0.002)

0.0005

FBG*

0.14 (0.12 to 0.16)

<0.0001

FBG 6–6.9

0.17 (0.13 to 0.01)

<0.0001

Age§

0.01 (0.005 to 0.008)

<0.0001

Male

-0.02 (-0.04 to -0.01)

0.04

Family History of Diabetes

0.03 (0.002 to 0.05)

0.03

  1. LDL—low density lipoprotein, HDL – high density lipoprotein, FBG—fasting blood glucose, BMI – body mass index, SBP—systolic blood pressure, DBP—diastolic blood pressure, Q1—first quintile, Q2—second quintile, Q3—third quintile, Q4—fourth quintile, Q5—fifth quintile.
  2. * for each additional 1 mmol/L.
  3. † BMI 30 or more.
  4. ** mmHg.
  5. ‡ for each additional 1 unit.
  6. § for each additional year.