Table 5.
Quantile regressions on monthly growth of TZD prescriptions, (n = 327 long-term adopters)
| Speed of TZD prescription (Monthly Growth on Total DDD of TZD) | Speed of TZD prescription (Monthly Growth on Total DDD of TZD) | Speed of TZD prescription (Monthly Growth on Total DDD of TZD) | |||||||
|---|---|---|---|---|---|---|---|---|---|
| 25% quantile | 50% quantile | 75% quantile | |||||||
| Coefficient | 95% CI | Coefficient | 95% CI | Coefficient | 95% CI | ||||
| Intercept | 57.14 | (-73.90 149.35) | 143.87 | (-125.85 474.82) | 248.98 | (-142.24 1045.51) | |||
| Initial time to adoption of TZD in month | 0.60 | (-0.17 0.99 ) | 0.47 | (-0.81 0.82) | 0.13 | (-0.57 1.86) | |||
| log (total DDD of DM in February, 2001) | 18.29 | (12.14 27.75) | * | 25.57 | (14.74 34.87) | * | 30.97 | (17.17 40.80) | * |
| HHI in February, 2001(unit: HHI*100) | -7.88 | (-55.35 45.67) | 10.81 | (-78.56 90.25) | 67.73 | (-46.51 180.98) | |||
| Number of doctors who prescribed TZD | 2.65 | (0.71 4.49 ) | * | 3.14 | (1.44 5.20) | * | 4.25 | (1.19 6.30) | * |
| Accreditation level | |||||||||
| Ref: Medical Center | |||||||||
| Regional Hospital | -193.39 | (-355.21 396.19) | -326.44 | (-577.59 -35.84) | * | -295.57 | (-962.53 159.11) | ||
| District Hospital | -249.47 | (-410.38 451.57) | -394.48 | (-647.42 -101.94) | * | -486.58 | (-1351.85 -32.69) | * | |
| NHI Regions | |||||||||
| Ref: Taipei | |||||||||
| Northern | -20.33 | (-30.27 -1.70) | * | -23.94 | (-58.11 52.29) | -11.05 | (-93.18 51.03) | ||
| Central | 2.85 | (-4.73 15.90) | 18.64 | (-34.77 49.89) | -40.12 | (-89.09 -2.39) | * | ||
| Southern | 6.93 | (-10.92 20.61) | 7.90 | (-23.38 45.70) | -22.49 | (-67.47 119.84) | |||
| Kao-Ping | -4.05 | (-18.10 10.18 ) | 2.64 | (-37.65 32.81) | -69.48 | (-112.26 -16.17) | * | ||
| Eastern | -38.15 | (-60.45 -27.91) | * | -71.45 | (-104.30 -50.74) | * | -114.75 | (-171.58 - 36.97) | |
| Ownership | |||||||||
| Ref: Public Hospital | |||||||||
| Non-profit Hospital | 74.52 | (42.13 95.49) | * | 103.08 | (30.75 130.09) | * | 73.89 | (-0.08 145.26) | |
| Private Hospital | 53.95 | (30.05 71.65) | * | 66.10 | (12.52 91.35) | * | 77.15 | (37.58 112.26) | * |
*: the 95% confident interval doesn't contain zero