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. 2016 May 13;6(5):e010276. doi: 10.1136/bmjopen-2015-010276

Table 5.

Longitudinal step-up and step-down analyses

  Stepping up to stronger opioids
Stepping down from stronger opioids
Unadjusted OR (95% CI) Adjusted OR (95% CI) Unadjusted OR (95% CI) Adjusted OR (95% CI)
Patient demography
Female 18–49 years 1 1 1 1
Female 50–64 years 1.05 (0.89 to 1.25) 0.94 (0.79 to 1.12) 1.07 (0.84 to 1.35) 1.07 (0.84 to 1.35)
Female 65–100 years 1.45 (1.25 to 1.69) 1.17 (1.00 to 1.38) 1.19 (0.96 to 1.47) 1.21 (0.97 to 1.50)
Male 18–49 years 0.99 (0.79 to 1.23) 1.21 (0.96 to 1.52) 0.55 (0.39 to 0.79) 0.53 (0.37 to 0.75)
Male 50–64 years 1.02 (0.84 to 1.23) 0.97 (0.79 to 1.19) 0.88 (0.66 to 1.16) 0.90 (0.68 to 1.20)
Male 65–100 years 0.9 (0.74 to 1.09) 0.77 (0.63 to 0.94) 1.16 (0.89 to 1.52) 1.20 (0.91 to 1.58)
British 1 Random effect Random effect
Pakistani 0.36 (0.30 to 0.44) Random effect 1.56 (1.22 to 2.00) Random effect
Other 0.79 (0.67 to 0.94) Random effect 1.31 (1.04 to 1.65) Random effect
Unknown 0.8 (0.70 to 0.90) Random effect 1.06 (0.90 to 1.27) Random effect
Patient morbidity, behaviour and healthcare use
Mental health problem 1.25 (0.98 to 1.59) 0.99 (0.69 to 1.43)
Definitively diagnosed disease 2.25 (2.02 to 2.50) 1.64 (1.46 to 1.85) 1.03 (0.86 to 1.22)
Clinical presentation without a definite diagnosis 1.87 (1.69 to 2.06) 1.60 (1.43 to 1.79) 0.95 (0.83 to 1.10)
Pain-associated syndrome 1.76 (1.13 to 2.74) 0.90 (0.43 to 1.89)
Alcohol problem 1.13 (0.69 to 1.84) 0.57 (0.21 to 1.60)
Smoking 1.09 (0.93 to 1.26) 0.87 (0.69 to 1.09)
Body mass index
 Normal 1 1 1
 Overweight 0.93 (0.62 to 1.40) 0.95 (0.62 to 1.45) 1.05 (0.60 to 1.84)
 Obese 1.13 (0.77 to 1.67) 1.08 (0.72 to 1.62) 1.31 (0.74 to 2.32)
 Underweight 2.94 (1.39 to 6.22) 3.26 (1.49 to 7.17)
 Weight unrecorded 0.96 (0.71 to 1.31) 0.91 (0.66 to 1.25) 1.07 (0.70 to 1.65)
Number of repeat prescriptions
 None 1 1 1 1
 1–4 2.2 (1.75 to 2.76) 1.66 (1.32 to 2.09) 0.73 (0.57 to 0.94) 0.71 (0.55 to 0.91)
 5–9 3.84 (3.06 to 4.82) 2.8 (2.21 to 3.54) 0.68 (0.53 to 0.89) 0.66 (0.51 to 0.86)
 10–56 5.86 (4.68 to 7.34) 4.15 (3.26 to 5.29) 0.65 (0.50 to 0.83) 0.60 (0.46 to 0.77)
Number of consultations
 0–6 1 1 1
 7–12 1.97 (1.59 to 2.44) 1.52 (1.22 to 1.88) 1.07 (0.85 to 1.35)
 13–366 5.42 (4.48 to 6.56) 3.04 (2.48 to 3.73) 0.95 (0.77 to 1.16)
Number of missed appointments
 0 1 1 1 1
 1–2 1.25 (1.12 to 1.39) 1.01 (0.87 to 1.17)
 3–29 1.32 (1.13 to 1.55) 0.84 (0.67 to 1.06)
Referrals
 Medical specialty 1.81 (1.59 to 2.06) 1.17 (1.02 to 1.34) 1.01 (0.84 to 1.23)
 Musculoskeletal specialty 2.39. 2.14 to 2.67) 1.48 (1.31 to 1.66) 1.14 (0.97 to 1.36)
 Neurology 2.97 (2.42 to 3.65) 1.77 (1.42 to 2.21) 0.54 (0.34 to 0.83) 0.59 (0.38 to 0.91)
 Specialist pain management 7.72 (6.60 to 9.02) 5.17 (4.37 to 6.12) 0.57 (0.42 to 0.77) 0.61 (0.45 to 0.83)
 Surgical specialty 1.83 (1.57 to 2.14) 1.29 (1.09 to 1.52) 1.03 (0.81 to 1.31)
Practice characteristics
List size
 1500–6999 1 1
 7000–10 999 1.18 (1.13 to 1.21) 0.79 (0.67 to 0.93)
 11 000–25 112 1.15 (1.12 to 1.19) 0.83 (0.7 to 0.99)
Practice Index of Multiple Deprivation
 7–26.7 1 1
 26.7–39.5 1.01 (0.98 to 1.05) 0.95 (0.79 to 1.12)
 39.5–57.5 0.92 (0.89 to 0.95) 1.22 (1.02 to 1.45)
Number of GPs
 0–4 1 1
 5–9 1.16 (1.12 to 1.19) 0.83 (0.71 to 0.96)
 9–20 1.14 (1.11 to 1.18) 0.66 (0.54 to 0.8)
 Teaching status 1.03 (1.01 to 1.06) 1.03 (1.01 to 1.06)
Total QOF clinical domain points
 198–403 1 1
 403–655 1.18 (1.04 to 1.33) 0.93 (0.78 to 1.11)
 655–697 1.38 (1.22 to 1.55) 0.84 (0.70 to 0.99)

Bold typeface represent odds ratios for which the 95% confidence intervals did not cross 1.

GP, general practitioner; QOF, Quality and Outcomes Framework.