PPCISPhysicians' Practice Costs and Income Survey
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As with most data, the PPCIS also has some weaknesses.
Finally, although the PPCIS is unique in its composition, it was conducted early in the current phase of changes in the health care industry.
While not perfectly suited to testing this hypothesis, the PPCIS data also include some questions that shed light on this issue.
PPCIS: Physicians' Practice Costs and Income Survey, expanded version
This result is consistent with the findings of Rosenbach and Stone (1990) using 19B3 and 1986 PPCIS data (Table 1).
This gives an indication of the small share differences required for specialties to be statistically aggregated, given the precision of the shares measured using the PPCIS.
The AMA's SMS has been a standard benchmark with which to compare the PPCIS cost shares.
The PPCIS has reported consistently lower values, although the difference declined between 1983-88.
PPCIS, in contrast, asks for yearly depreciation and interest costs for tax purposes, avoiding the word mortgage entirely.
Their estimates of office costs are more similar to the PPCIS than to the SMS.
An alternative MEI (AMEI) is constructed in this article using cost shares from the 1988 PPCIS and MEI line item inflation rates.
Table 5 presents the historical (i.e., actual) MEI values and AMEI values constructed using MEI inflation proxies and the national PPCIS cost shares.