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Table 3

Factors associated with time to claim closure (n=1442)*

Univariate
Multivariable
HR (99% CI)p ValueAdjusted HR (99% CI)p Value
Baseline predictors
Age categories in years<0.001<0.001
 15 to <251.001.00
 25 to <350.88 (0.65 to 1.19)0.79 (0.58 to 1.09)
 35 to <450.78 (0.59 to 1.04)0.70 (0.52 to 0.95)
 45 to <550.76 (0.56 to 1.02)0.67 (0.49 to 0.91)
 55–650.56 (0.40 to 0.80)0.52 (0.36 to 0.74)
Gender0.1140.446
 Females1.09 (0.95 to 1.26)0.96 (0.82 to 1.12)
 Males1.001.00
First language0.1370.312
 English1.001.00
 Other0.83 (0.59 to 1.15)0.88 (0.63 to 1.23)
Predisability income in dollars per week
 At 60 days
  ≤4801.001.00
  481–6941.09 (0.89 to 1.34)0.2731.03 (0.83 to 1.27)0.749
  695–9201.13 (0.92 to 1.39)0.1370.96 (0.77 to 1.21)0.678
  >9201.08 (0.88 to 1.33)0.3260.93 (0.74 to 1.18)0.443
 At 180 days
  ≤4801.001.00
  481–6940.89 (0.68 to 1.17)0.2670.89 (0.67 to 1.17)0.266
  695–9200.84 (0.63 to 1.12)0.1150.73 (0.54 to 0.98)0.006
  >9200.72 (0.54 to 0.97)0.0040.63 (0.46 to 0.86)<0.001
 At 365 days
  ≤4801.001.00
  481–6940.65 (0.36 to 1.18)0.0640.71 (0.38 to 1.31)0.147
  695–9200.53 (0.28 to 1.02)0.0120.47 (0.24 to 0.91)0.003
  >9200.39 (0.20 to 0.75)<0.0010.34 (0.17 to 0.68)<0.001
Early reimbursement for opioid prescription (within the first 28 days)<0.001<0.001
 Yes0.62 (0.48 to 0.80)0.68 (0.53 to 0.88)
 No1.001.00
Prior claims0.3060.709
 Yes1.07 (0.91 to 1.26)1.03 (0.86 to 1.22)
 No1.001.00
Union membership<0.0010.016
 Yes1.29 (1.11 to 1.50)1.14 (0.96 to 1.35)
 No1.001.00
 Missing1.34 (1.07 to 1.68)1.27 (1.01 to 1.59)
Employer RTW programme<0.001<0.001
 Yes1.73 (1.43 to 2.09)1.78 (1.45 to 2.18)
 No1.001.00
 Missing1.17 (0.87 to 1.58)1.17 (0.86 to 1.59)
Doubt work relatedness0.1740.138
 Yes0.94 (0.76 to 1.16)0.88 (0.71 to 1.08)
 No1.001.00
 Missing1.13 (0.92 to 1.39)1.08 (0.87 to 1.33)
Early reimbursement for chiropractic care
 At 60 days1.19 (0.99 to 1.45)0.0171.15 (0.94 to 1.41)0.067
 At 180 days0.91 (0.65 to 1.24)0.4370.90 (0.65 to 1.24)0.392
 At 365 days0.60 (0.29 to 1.23)0.0670.61 (0.29 to 1.29)0.089
Early reimbursement for physiotherapy0.98 (0.84 to 1.15)0.7261.01 (0.86 to 1.19)0.848

Early reimbursement for chiropractic or physiotherapy=3 or more treatments received within the first 28 days.

*HR>1 indicates faster claim closure.

RTW, return to work.

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