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Table 3 Mean parameter estimates (β) with corresponding 2.5% and 97.5% quantiles from a bootstrap study of 10,000 replications with sample size n = 5000

From: Using quantile regression to investigate racial disparities in medication non-adherence

 

QReg

  
 

Quantile1

Quantile2

Quantile3

Quantile4

OLS

GLMM

Parameter

β (95%CI)

β (95%CI)

β (95%CI)

β (95%CI)

β (95%CI)

β (95%CI)

Intercept

39.83 (14.7,61.3)

48.8(28.4,69.2)

71.5(60.5,81.5)

82.5(76.4,88.8)

88.23(84.4,91.9)

92.21(88.7,95.2)

NHB

-3.54(-11.2,3.43)

-4.55(-10.9,1.7)

-2.91(-5.6,-0.19)

-1.87(-3.3,-0.54)

-1.38(-2.31,-0.46)

-1.42(-2.10,-0.77)

Other

-5.94(-14.4,2.2)

-4.38(-13.2,3.1)

-1.05(-3.8,1.60)

0.44(-1.2,2.1)

-0.12(-1.10,0.85)

-0.65(-1.49,0.11)

NHW (REF)

      

Male

-11.8(-22.8,0.39)

-6.78(-16.6,3.6)

0.61(-4.9,7.8)

1.13(-3.2,5.5)

-0.51(-2.88,2.01)

-0.55(-2.50,1.50)

Age

0.24(-0.01,0.55)

0.27(0.01,0.52)

0.17(0.05,0.29)

0.13(0.06,0.19)

0.08(0.03,0.12)

0.04(0.01,0.08)

Age2

-0.01(-0.02,0.01)

-0.01(-0.02,0.01)

-0.01(-0.02,0.002)

-0.01(-0.01,-0.001)

-0.01(-0.01,0.00)

-0.01(-0.01,-0.001)

Never Married

-3.51(-12.9,6.9)

-5.69(-15.9,6.6)

-0.76(-5.3,2.9)

-2.09(-5.1,0.91)

-0.88(-2.71,0.88)

-0.83(-0.41,2.12)

Divorced

-3.45(-9.7,2.2)

-4.67(-10.9,1.2)

-3.13(-5.9,-0.57)

-2.57(-4.0,-1.1)

-1.44(-2.36,-0.56)

-0.91(-0.24,1.59)

Married (REF)

      

Employed

5.10(-1,8,13.1)

4.58(-2.8,11.4)

2.60(-0.17,5.42)

1.16(-4.57,2.9)

1.27(0.20,2.33)

0.08(-0.85,0.97)

Retired

-0.06(-6.9,7.8)

1.42(-5.2,7.5)

1.68(-0.91,4.36)

1.22(-0.15,2.6)

0.63(-0.27,1.53)

-0.65(-1.35,0.00)

Unemployed (REF)

      

Cancer

-8.20(-19.2,2.7)

-11.4(-23.5,1.7)

-3.14(-9.9,2.99)

-0.45(-3.6,2.2)

-1.37(-3.45,0.57)

-0.45(-1.89,0.81)

CHD

11.8(0.82,21.2)

8.27(0.94,15.6)

0.65(-2.6,4.32)

0.20(-1.9,2.2)

0.70(-0.64,2.04)

-0.14(-1.04,0.79)

CHF

0.68(-10.4,11.2)

-0.29(-7.8,7.4)

-1.05(-4.7,2.46)

-2.05(-4.7,0.28)

-0.87(-2.45,0.66)

-0.79(-1.93,0.27)

Hypertension (ICD)

1.36(-6.7,11.2)

-0.89(-8.6,6.8)

-1.30(-4.7,1.54)

-1.69(-3.5,0.05)

-1.13(-2.33,0.05)

-0.09(-0.88,0.67)

Poor HbA1c

10.2(0.5,18.2)

6.45(0.34,12.0)

-0.84(-3.6,1.72)

-2.59(-4.3,-0.99)

-1.00(-2.03,0.02)

-4.13(-4.89,-3.34)

Stroke

-0.76(-12.3,10.9)

-4.04(-13.3,5.9)

-1.18(-10.3,4.29)

-0.48(-4.2,2.6)

-0.60(-2.87,1.55)

-0.05(-1.47,1.27)

Bipolar Disorder

-3.68(-24.3,19.9)

-1.57(-22.7,18.3)

1.49(-4.5,7.1)

-0.35(-4.9,3.9)

-0.24(-3.35,2.50)

-0.31(-1.71,2.06)

GAD

3.89 (-9.5,18.9)

0.50(-14.7,13.2)

2.36(-5.9,7.9)

1.57(-1.5,3.9)

0.88(-1.58,3.12)

0.74(-0.86,2.36)

Psychoses

5.90(-12.0,22.4)

4.72(-12.7, 17.1)

-2.38(-8.9,4.6)

-0.07(-6.1,3.7)

0.001(-2.7,2.6)

-0.65(-2.78,1.23)

PTSD

0.13(-11.7,12.5)

-0.75(-13.2, 9.5)

2.30(-3.1,6.5)

1.50(-0.72,3.5)

0.68(-1.01,2.20)

0.58(-0.66,1.86)

Substance Use

5.65(-3.1,15.2)

5.53(-2.5,12.7)

2.90(-0.001,5.7)

1.41(-0.06,2.8)

1.00(-0.01,2.00)

0.26(-0.48,0.99)

  1. NHB = Non-Hispanic Black (Reference = Non-Hispanic White, NHW)
  2. Other = Other race groups
  3. β = Mean bootstrapped Parameter Estimate
  4. Quantile 1 = 0.02 corresponding to a medication possession ratio (MPR) of 40%
  5. Quantile 2 = 0.04 corresponding to a medication possession ratio (MPR) of 60.%
  6. Quantile 3 = 0.15 corresponding to a medication possession ratio (MPR) of 80.%
  7. Quantile 4 = 0.27 corresponding to a medication possession ratio (MPR) of 90%
  8. 95% CI = 95% confidence interval based on 2.5% and 97.5% quantiles from a bootstrap study