Table 2.
Regressions on the Hospital-Quarter Level in NIS
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) | (11) | (12) | (13) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Total Discharges | Log Total Disch. | Nonelderly Dischg. | Log Noneld. Dischg. | Elderly Dischg. | Log Elderly Dischg. | Hospital Bedsize | Charlson Score | APRDRG Risk Mortality | APRDRG Severity | APSDRG Mortality Weight | APSDRG LOS Weight | APSDRG Charge Weight | |
| MA* After | 19 [−183,220] | 0.0037 [−0.0133,0.0206] | −7 [−174,160] | 0.0029 [−0.0192,0.0250] | 26 [−19,70] | 0.0115 [−0.0059,0.0289] | −21 [−62,20] | 0.0340 [0.0205,0.0476]*** | 0.0057 [−0.0050,0.0164] | 0.0062 [−0.0097,0.0220] | −0.0059 [−0.0323,0.0206] | −0.006 [−0.0141,0.0022] | −0.0195 [−0.0310, −0.0080]*** |
| N (All Ages) | 18,622 | 18,622 | 18,622 | 18,590 | 18,622 | 18,327 | 11,753 | 18,622 | 18,622 | 18,622 | 18,622 | 18,622 | 18,622 |
|
| |||||||||||||
| Mean MA Before | 5616 | 8.4125 | 3,592 | 7.8958 | 2,023 | 7.4190 | 409 | 0.5750 | 1.5467 | 1.8892 | 1.1504 | 1.0660 | 1.0623 |
| Mean Non-MA Before | 5029 | 8.1894 | 3,454 | 7.7512 | 1,569 | 7.0394 | 372 | 0.5058 | 1.4919 | 1.8413 | 1.0992 | 1.0313 | 1.0356 |
| Mean MA After | 6769 | 8.5300 | 4,433 | 8.0369 | 2,336 | 7.5456 | 472 | 0.7325 | 1.6144 | 1.9672 | 1.2324 | 1.0758 | 1.0488 |
| Mean Non-MA After | 5389 | 8.2327 | 3,712 | 7.7908 | 1,672 | 7.0949 | 418 | 0.6518 | 1.5700 | 1.9289 | 1.2167 | 1.0457 | 1.0417 |
| (14) | (15) | (16) | (17) | (18) | (19) | |
|---|---|---|---|---|---|---|
| Total Costs, $Mill | Log Total Costs | Total Costs/LOS | Log Costs/LOS | Total Costs/Disch. | Log Costs/Disch. | |
| MA* After 2006 | 4.166 [0.767,7.566]** | −0.008 [−0.036,0.021] | 2.625 [−31.251,36.501] | 0.005 [−0.023,0.033] | 30.649 [−199.750,261.049] | −0.006 [−0.037,0.024] |
| N (All Ages) | 13,825.00 | 13,820.00 | 13,825.00 | 13,820.00 | 13,825.00 | 13,820.00 |
|
| ||||||
| Mean MA Before 2006 | 49.799 | 17.375 | 1379.904 | 7.199 | 8169.940 | 8.960 |
| Mean Non-MA Before 2 | 41.807 | 17.114 | 1353.560 | 7.181 | 7632.107 | 8.891 |
| Mean MA After 2006 | 78.726 | 17.690 | 1685.574 | 7.400 | 9879.292 | 9.144 |
| Mean Non-MA After 200 | 52.737 | 17.301 | 1606.186 | 7.343 | 8972.501 | 9.042 |
95% asymptotic CI clustered by state:
***
Significant at .01,
**
Significant at .05,
*
Significant at .10
MA*During included but coefficient not reported. All specifications and means are on hospital-quarter level, weighted by sum of discharge weights.
All specifications include hospital fixed effects and time fixed effects for 2004 to 2008, quarterly.
Hospital Bedsize is merged on to the HCUP NIS using AHA data.
Discharges with missing age included in “Total Discharges” specifications but not in “Nonelderly” or “Elderly” specifications.
Source: HCUP NIS 2004–2008 authors’ calculations. See text for more details.