Table 4 Zero truncated negative binomial regression: rates of mobile medical clinic visits per year by chronic illness in a sample of mobile medical clinic patients between January 1, 2018—December 31, 2019 (N = 411)

All

Predisposing variables

 Gender/Sex

  Female

1.04 (0.84–1.28)

1.02 (.09–1.20)

  Male

Referent

Referent

Race/Ethnicity

 Hispanic

2.09 (1.34–3.26) ****

1.68 (1.14–2.48) ***

 African American

1.02 (0.54–1.93)

1.07 (0.62–1.87)

 White

Referent

Referent

 Unspecified

1.35 (0.80–2.28)

1.38 (0.87–2.21)

Age

 25–35

Referent

Referent

 36 -45

2.37 (1.34–4.19) ***

1.42 (0.87–2.33)

 46–55

2.99 (1.71–5.22) ****

1.32 (0.80–2.19)

 56–65

3.80 (2.17–6.65) ****

1.12 (0.64–1.96)

 66 + 

3.36 (1.87–6.05) ****

0.98 (0.54–1.79)

Marital Status

 Single

0.63(0.51–0.78) ****

0.74(0.62–0.89) ****

 Married

Referent

Referent

 Unknown

0.77 (0.60- 0.99) **

0.95 (0.77–1.17)

Enabling variables

 Insurance Status

  Uninsured

2.10 (1.37–3.24) ****

1.40 (0.96–2.06)

  Other

Referent

Referent

  Unknown

1.09 (0.71–1.67)

0.94 (.64–1.38)

Need variables

 Chronic Illness

  Hypertension

2.31 (1.93–2.76) ****

1.61 (1.36–1.92) ****

  Diabetes

1.89 (1.56–2.29) ****

1.22 (1.02–1.45) *

Other Medical Conditions

 Obesity

1.52 (1.22–1.90) ****

1.27 (1.07–1.51) ****

 Depression

1.32 (2.34–2.59)

–

Charlson Comorbidity index Score

 0

Referent

Referent

 1

1.91 (1.49–2.45) ****

1.55 (1.22–1.98) ****

 2

2.21 (1.72–2.85) ****

1.74 (1.26–2.40) ****

 3

2.46 (1.85–3.27) ****

1.88 (1.27–2.77) ***

 4 + 

1.69 (1.13–2.54) **

1.54 (0.95–2.50)