Table 2.
Changes in Chemotherapy Treatment after the Jan 2005 Payment Reform
| Pre-Jan 2005 mean | Sample Window (Months) | ||
|---|---|---|---|
| +/−11 | +/−9 | ||
| Panel A: Share of Patients Receiving Chemotherapy Treatment… | |||
| within 1 month of diagnosis, in a Physician’s Office | 0.130 | 0.016 (0.003) | 0.016 (0.003) |
| within 1 month, Physician excluding carboplatin | 0.052 | 0.015 (0.002) | 0.014 (0.001) |
| within 1 month, in an outpatient hospital clinic | 0.028 | −0.001 (0.001) | −0.001 (0.001) |
| within 1 month, all settings | 0.166 | 0.015 (0.003) | 0.014 (0.002) |
|
| |||
| Panel B: Percent Change in Chemotherapy Service Counts… | |||
| within 1 month of diagnosis, in a Physician’s Office | 0.916 | 0.347 (0.047) | 0.340 (0.046) |
| within 1 month, Physician excluding carboplatin | 0.274 | 0.203 (0.024) | 0.209 (0.023) |
| within 1 month, in an outpatient hospital clinic | 0.087 | 0.013 (0.003) | 0.013 (0.004) |
| within 1 month, all settings | 1.00 | 0.339 (0.046) | 0331 (0.044) |
|
| |||
| Panel C: Share of Chemotherapy-treated patients receiving within 1 month… | |||
| carboplatin | 0.557 | −0.039 (0.008) | −0.026 (0.008) |
| paclitaxel | 0.300 | −0.074 (0.007) | −0.061 (0.006) |
| docetaxel | 0.083 | 0.026 (0.004) | 0.026 (0.006) |
| etoposide | 0.210 | −0.005 (0.010) | 0.004 (0.007) |
| gemcitabine | 0.100 | 0.007 (0.003) | 0.008 (0.004) |
|
| |||
| Number of Observations (weeks) | 48 | 96 | 72 |
Notes: Means in column 1 are for the dependent variable prior to ASP implementation, Feb–Dec 2004. Columns (2) and (3) contain coefficients from separate time-series regressions using data from Feb 2004–Nov 2005 and April 2004–Sept 2005, respectively. Estimates are the coefficients on an indicator for the pot-reform/ASP payment period. Regressions control for mean patient characteristics (see Table 1) and relative-week trends that are allowed to differ on either side of the payment change. Excluding carboplatin” means the share of patients treated with chemotherapy and without carboplatin. Newey-West standard errors allowing for autocorrelation up to 52-week lags are given in parentheses.