Table 5.
Adjusted quantile regression for differences in time-loss days until full sustainable RTW 1 year after the first time-loss day,* by industry sector
| Service sector | Trade | Manufacturing | Construction | |||||
| Calendar days off work for workers without GRTW (95% CI)† | Coefficient (additional calendar days off work for workers with GRTW) (95% CI) | Calendar days off work for workers without GRTW (95% CI)† | Coefficient (additional calendar days off work for workers with GRTW) (95% CI) | Calendar days off work for workers without GRTW (95% CI)† | Coefficient (additional calendar days off work for workers with GRTW) (95% CI) | Calendar days off work for workers without GRTW (95% CI)† | Coefficient (additional calendar days off work for workers with GRTW) (95% CI) | |
| 10th | 44.94 (43.60 to 46.28) | 20.22 (18.55 to 21.89) | 42.71 (40.07 to 45.35) | 25.72 (22.06 to 29.37) | 44.98 (42.52 to 47.43) | 22.7 (19.67 to 25.73) | 44.97 (42.91 to 47.03) | 22.5 (19.89 to 25.15) |
| 20th | 58.45 (56.52 to 60.39) | 21.90 (19.49 to 24.30) | 56.82 (53.01 to 60.62) | 26.57 (21.30 to 31.83) | 58.96 (55.43 to 62.50) | 24.68 (20.31 to 29.04) | 58.93 (55.96 to 61.91) | 25.62 (21.81 to 29.43) |
| 30th | 74.83 (72.19 to 77.47) | 22.65 (19.36 to 25.95) | 74.53 (69.32 to 79.73) | 26.61 (19.41 to 33.82) | 76.25 (71.41 to 81.09) | 25.62 (19.65 to 31.59) | 75.85 (71.79 to 79.92) | 27.11 (21.90 to 32.32) |
| 40th | 95.14 (91.33 to 98.96) | 22.15 (17.39 to 26.90) | 98.20 (90.68 to 105.71) | 23.27 (12.87 to 33.67) | 104.04 (97.06 to 111.03) | 20.39 (11.77 to 29.02) | 98.07 (92.20 to 103.94) | 28.56 (21.04 to 36.09) |
| 50th | 124.13 (118.27 to 130.00) | 20.65 (13.34 to 27.96) | 134.71 (123.16 to 146.27) | 11.72 (−4.26 to 27.71) | 146.73 (136.00 to 157.47) | 5.94 (−7.31 to 19.20) | 135.25 (126.22 to 144.28) | 27.19 (15.63 to 38.75) |
| 60th | 175.21 (164.87 to 185.55) | 12.70 (−0.18 to 25.58) | 245.72 (225.37 to 266.08) | −59.66 (−87.93 to −31.50) | 245.05 (226.14 to 263.97) | −53.79 (−77.14 to −30.43) | 206.38 (190.47 to 222.29) | 7.07 (−13.31 to 27.44) |
| 70th | 276.59 (260.82 to 292.36) | −16.23 (−35.88 to 3.42) | 316.72 (285.67 to 347.77) | −70.49 (−113.45 to −27.52) | 317.24 (288.39 to 346.09) | −44.15 (−79.77 to −8.52) | 305.55 (281.29 to 329.82) | −8.03 (−39.11 to 23.04) |
| 80th | 348.79 (346.78 to 350.80) | 0 (−2.51 to 2.51) | 348.79 (344.96 to 352.62) | 0 (−5.48 to 5.48) | 348.79 (345.11 to 352.47) | 0 (−4.55 to 4.55) | 348.79 (345.69 to 351.88) | 0 (−3.96 to 3.96) |
| 90th | 365.00 (365.00 to 365.00) | 0 (0 to 0)‡ | 365.00 (365.00 to 365.00) | 0 (0 to 0)‡ | 365.00 (365.00 to 365.00) | 0 (0 to 0)‡ | 365.00 (365.00 to 365.00) | 0 (0 to 0)‡ |
The regression coefficients represent the difference in days relative to the number of days for the workers without GRTW by 10 percentiles of the distribution.
*Adjusted for: MSD, age, wage, gender, occupation, prior claims, firm size, industry sector, claim year, use of opioids, NSAIDs and SMRs within 30 days post claim.
†Adjusted prediction of cumulative time-loss days when all other variables are set at the sample means.
‡Zero value caused by censoring of the data at 365 days.
GRTW, gradual return to work; MSD, musculoskeletal disorder; NSAIDs, non-steroidal anti-inflammatory drugs; RTW, return to work.