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Table 4 Sensitivity analysis of item totals, median and range, median and range for each level of OAT use (None: n = 88, Partial: n = 32, Complete: n = 75), unadjusted (IRR) and adjusted incidence rate ratios (AIRR) comparing primary healthcare-based medication dispensation across different levels of post-release OAT use among participants who reported any opioid use since baseline interview (N = 195)

From: Is use of opioid agonist treatment associated with broader primary healthcare use among men with recent injecting drug use histories following release from prison? A prospective cohort study

Outcome

Aggregate counta

Median (range)

IRR (95%CI)

p-value

AIRRb (95%CI)

p-value

1. Standard consultations

608

2 (0–30)

    

  OAT: None

138

1 (0–15)

REF

   

  OAT: Partial

127

3.5 (0–19)

2.76 (1.70–4.47)

 < 0.001

2.85 (1.70–4.77)

 < 0.001

  OAT: Complete

343

4 (0–30)

3.39 (2.33–4.94)

 < 0.001

3.52 (2.35–5.27)

 < 0.001

2. Extended consultations

152

0 (0–10)

    

  OAT: None

40

0 (0–10)

REF

   

  OAT: Partial

33

1 (0–4)

2.59 (1.38–4.85)

0.003

2.96 (1.51–5.79)

0.002

  OAT: Complete

79

1 (0–8)

2.75 (1.66–4.54)

 < 0.001

2.85 (1.66–4.89)

 < 0.001

3. Mental health consultations

103

0 (0–7)

    

  OAT: None

24

0 (0–5)

REF

   

  OAT: Partial

27

0 (0–7)

3.26 (1.62–6.58)

0.001

3.13 (1.51–6.49)

0.002

  OAT: Complete

52

0 (0–6)

2.97 (1.66–5.34)

 < 0.001

2.71 (1.45–5.08)

0.002

4. After-hours consultations

73

0 (0–9)

    

  OAT: None

16

0 (0–2)

REF

   

  OAT: Partial

26

0 (0–6)

5.26 (2.46–11.22)

 < 0.001

4.88 (2.12–11.25)

 < 0.001

  OAT: Complete

31

0 (0–9)

2.41 (1.21–4.79)

0.012

1.76 (0.79–3.92)

0.168

5. Pathology items

275

0 (0–26)

    

  OAT: None

75

0 (0–10)

REF

   

  OAT: Partial

37

0 (0–7)

1.52 (0.85–2.72)

0.154

1.49 (0.79–2.82)

0.216

  OAT: Complete

163

0 (0–26)

3.09 (2.02–4.71)

 < 0.001

2.76 (1.67–4.58)

 < 0.001

6. Total prescriptions

925

1 (0–49)

    

  OAT: None

285

0 (0–36)

REF

   

  OAT: Partial

155

2 (0–28)

1.58 (1.00–2.50)

0.050

2.00 (1.21–3.29)

0.007

  OAT: Complete

485

3 (0–49)

2.15 (1.51–3.05)

 < 0.001

2.65 (1.79–3.93)

 < 0.001

7. ATC: nervous system

762

1 (0–49)

    

  OAT: None

206

0 (0–29)

REF

   

  OAT: Partial

135

1.5 (0–27)

1.89 (1.19–3.03)

0.007

2.60 (1.55–4.37)

 < 0.001

  OAT: Complete

421

3 (0–49)

2.60 (1.82–3.73)

 < 0.001

3.61 (2.38–5.47)

 < 0.001

8. ATC: anti-infectives

53

0 (0–4)

    

  OAT: None

29

0 (0–4)

REF

   

  OAT: Partial

9

0 (0–3)

0.93 (0.39–2.21)

0.864

0.92 (0.37–2.32)

0.866

  OAT: Complete

15

0 (0–2)

0.66 (0.33–1.34)

0.252

0.75 (0.34–1.65)

0.474

9. ATC: Alimentary & metabolicc

41

0 (0–6)

    

  OAT: None

18

0 (0–6)

REF

   

  OAT: Partial

2

0 (0–1)

0.31 (0.07–1.43)

0.134

–

–

  OAT: Complete

21

0 (0–4)

1.53 (0.75–3.11)

0.241

–

–

10. ATC: Other

69

0 (0–9)

    

  OAT: None

32

0 (0–9)

REF

   

  OAT: Partial

9

0 (0–4)

0.79 (0.33–1.86)

0.589

0.75 (0.27–2.03)

0.568

  OAT: Complete

28

0 (0–8)

1.07 (0.58–1.95)

0.836

0.87 (0.43–1.78)

0.708

11. Opioids

118

0 (0–17)

    

  OAT: None

73

0 (0–17)

REF

   

  OAT: Partial

10

0 (0–4)

0.37 (0.17–0.83)

0.015

0.60 (0.23–1.55)

0.289

  OAT: Complete

35

0 (0–10)

0.61 (0.36–1.02)

0.059

0.62 (0.31–1.28)

0.197

12. Benzodiazepines

334

0 (0–45)

    

  OAT: None

55

0 (0–25)

REF

   

  OAT: Partial

68

0 (0–27)

3.60 (2.06–6.26)

 < 0.001

4.59 (2.42–8.70)

 < 0.001

  OAT: Complete

211

0 (0–45)

5.35 (3.44–8.32)

 < 0.001

7.19 (4.23–12.20)

 < 0.001

13. Gabapentinoidsd

102

0 (0–14)

    

  OAT: None

16

0 (0–8)

REF

   

  OAT: Partial

33

0 (0–14)

7.05 (3.39–14.69)

 < 0.001

7.13 (3.21–15.86)

 < 0.001

  OAT: Complete

53

0 (0–11)

4.04 (2.11–7.75)

 < 0.001

4.67 (2.32–9.38)

 < 0.001

  1. aBetween date of index release and three-month follow-up; bAdjusted for age at baseline, Aboriginal or Torres Strait Islander, self-reported health status, main drug injected in the preceding 30 days, GHQ-12 score, area of residence, ever diagnosed with a mental illness, ever diagnosed with a chronic health condition, times moved since last interview, accommodation stability and current support worker; cAn adjusted model was not estimated for associations between OAT and Alimentary & Metabolic dispensations due to an insufficient count among people reporting partial OAT; dAdjusted model does not include covariate of main drug injected in the preceding 30 days due to an insufficient cell count in one level of this covariate