Table 6 Quantile regressions on peak monthly TZD prescriptions in DDD, (n = 327 long-term adopters)
| Â | Peak Monthly Prescriptions in DDD | Â | Â | Â | Peak Monthly Prescriptions in DDD | Â | Â | Â | Peak Monthly Prescriptions in DDD | Â | Â | Â |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Â | 25% quantile | Â | Â | Â | 50% quantile | Â | Â | Â | 75% quantile | Â | Â | Â |
| Â | Coefficient | 95% CI | Â | Â | Coefficient | 95% CI | Â | Â | Coefficent | 95% CI | Â | Â |
Intercept | -11683.46 | (-25849.01 | 4891.88) | Â | 3087.64 | (-1755.33 | 9708.63) | Â | 6092.86 | (3040.05 | 13060.79) | * |
Initial time to adoption of TZD in month | -40.33 | (-90.40 | -21.74) | * | -38.65 | (-60.14 | -18.79) | * | -32.29 | (-40.34 | -25.03) | * |
log (total DDD of DM in February, 2001) | 144.32 | (-23.53 | 501.21) | Â | 63.94 | (-103.01 | 252.24) | Â | -7.11 | (-134.58 | 55.07) | Â |
Number of doctors who prescribed TZD | 56.75 | (-0.63 | 128.80) | Â | 41.67 | (23.84 | 71.43) | * | 35.51 | (14.66 | 104.83) | * |
Prescription Speed (monthly growth on TZD prescription; DDD/month) | 16.53 | (10.99 | 18.80 ) | * | 24.91 | (20.61 | 28.60) | * | 31.50 | (28.04 | 35.07) | * |
Accreditation level | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   Ref: Medical Center |  |  |  |  |  |  |  |  |  |  |  |  |
   Regional Hospital | 9572.52 | (-9434.71 | 21541.35) |  | -3241.95 | (-8473.35 | 4505.39) |  | -5666.94 | (-20463.60 | -1502.91) | * |
   District Hospital | 8507.36 | (-11661.53 | 22343.97) |  | -3801.32 | (-9289.80 | 2804.17) |  | -5868.08 | (-13770.06 | -1838.18) | * |
NHI Regions | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   Ref: Taipei |  |  |  |  |  |  |  |  |  |  |  |  |
   Northern | -1017.83 | (-1835.78 | -547.86) | * | -866.80 | (-1422.52 | -133.63) | * | -451.32 | (-625.48 | -233.11) | * |
   Central | 70.82 | (-410.31 | 368.95) |  | -95.32 | (-304.72 | 272.10) |  | -28.60 | (-251.57 | 172.36) |  |
   Southern | -487.75 | (-1144.62 | -11.28) | * | -495.10 | (-1015.13 | -54.84) | * | -451.29 | (-842.53 | -2.09) | * |
   Kao-Ping | -69.25 | (-839.40 | 553.97) |  | 179.82 | (-143.65 | 823.57) |  | 507.19 | (105.50 | 1048.41) | * |
   Eastern | 497.82 | (-405.36 | 1013.11) |  | -63.27 | (-652.49 | 235.63) |  | -375.01 | (-651.40 | -28.58) | * |
Ownership | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   Ref: Public Hospital |  |  |  |  |  |  |  |  |  |  |  |  |
   Non-profit Hospital | 2478.04 | (1309.10 | 5472.91) | * | 1081.43 | (497.90 | 1751.43) | * | 725.85 | (321.59 | 987.01) | * |
   Private Hospital | 2521.98 | (1138.68 | 4492.53) | * | 872.32 | (344.70 | 1456.89) | * | 391.32 | (159.27 | 658.54) | * |