Greta M Ljung
Biographic Data
| ID | 5537326 |
|---|---|
| NAME | Greta M Ljung |
| GIVEN NAMES | Greta M |
| FAMILY NAME | Ljung |
| SIGNATURE | LJUNG G M |
| AFFILIATIONS | Boston University |
| VERIFIED | No |
| TOTAL WORKS | 3 |
| TOTAL CITATIONS | 6 |
| WORKS AS AUTHOR | 3 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 1978 |
| LATEST PUBLICATION YEAR | 1982 |
| H-INDEX | 1 |
Impact of a Mandatory Second-Opinion Program on Medicaid Surgery Rates
The effect of the Massachusetts second-opinion program on the volume of elective surgery in the Medicaid population was assessed using two approaches: a study of the program experience and surgery decisions of 2,501 program referrals, and an analysis of Medicaid surgery rates before and after program implementation. Nonconfirmation rates, which averaged 14.5 per cent, varied by procedure from 4 per cent for cholecystectomy to 26 per cent for disc…
The effect of a thirty per cent reduction in physician fees on Medicaid surgery rates in Massachusetts
In this paper, we use an interrupted time series analysis to assess the effect of a 30 per cent reduction in the Medicaid reimbursement fee for physician services on the rate at which eight elective surgical procedures were performed in the Massachusetts Medicaid population. Tonsillectomy/adenoidectomy is the only procedure in which there was a statistically significant decline in the rate of surgery in most areas of the state following the fee c…
On a measure of lack of fit in time series models
The overall test for lack of fit in autoregressive-moving average models proposed by Box & Pierce (1970) is considered. It is shown that a substantially improved approximation results from a simple modification of this test. Some consideration is given to the power of such tests and their robustness when the innovations are nonnormal. Similar modifications in the overall tests used for transfer function-noise models are proposed
The effect of a thirty per cent reduction in physician fees on Medicaid surgery rates in Massachusetts
In this paper, we use an interrupted time series analysis to assess the effect of a 30 per cent reduction in the Medicaid reimbursement fee for physician services on the rate at which eight elective surgical procedures were performed in the Massachusetts Medicaid population. Tonsillectomy/adenoidectomy is the only procedure in which there was a statistically significant decline in the rate of surgery in most areas of the state following the fee c…
On a measure of lack of fit in time series models
The overall test for lack of fit in autoregressive-moving average models proposed by Box & Pierce (1970) is considered. It is shown that a substantially improved approximation results from a simple modification of this test. Some consideration is given to the power of such tests and their robustness when the innovations are nonnormal. Similar modifications in the overall tests used for transfer function-noise models are proposed
The effect of a thirty per cent reduction in physician fees on Medicaid surgery rates in Massachusetts
In this paper, we use an interrupted time series analysis to assess the effect of a 30 per cent reduction in the Medicaid reimbursement fee for physician services on the rate at which eight elective surgical procedures were performed in the Massachusetts Medicaid population. Tonsillectomy/adenoidectomy is the only procedure in which there was a statistically significant decline in the rate of surgery in most areas of the state following the fee c…
Impact of a Mandatory Second-Opinion Program on Medicaid Surgery Rates
The effect of the Massachusetts second-opinion program on the volume of elective surgery in the Medicaid population was assessed using two approaches: a study of the program experience and surgery decisions of 2,501 program referrals, and an analysis of Medicaid surgery rates before and after program implementation. Nonconfirmation rates, which averaged 14.5 per cent, varied by procedure from 4 per cent for cholecystectomy to 26 per cent for disc…
Family medicine (2 works) · Health care (2 works) · Healthcare Policy and Management (2 works) · Medicaid (2 works) · Medicine (2 works) · Actuarial science (1 work) · Applied Mathematics (1 work) · Autoregressive model (1 work) · Business (1 work) · Computer Science (1 work)