Table A3.
Coefficients on Selected Covariates in NIS
| Dependent Variable | (1) (preferred) Uninsured |
(2) (covariates) Uninsured |
(2) (covariates cont.) | (2) (covariates cont.) | (2) (covariates cont.) | |||
|---|---|---|---|---|---|---|---|---|
| Ma* After | −0.0231 [−0.0300,−0.0162]*** | −0.0228 [−0.0297,−0.0158]*** | Female | −0.0394 [−0.0453,−0.0336]*** | AHRQ Comorb. cm_dmcx | −0.0220 [−0.0279,−0.0161]*** | Charlson 6 | 0.0255 [0.0201,0.0308]*** |
| MA* During | −0.0129 [−0.0176,−0.0083]*** | −0.0131 [−0.0177,−0.0085]*** | Gender Unknown | −0.0058 [−0.0256,0.0139] | AHRQ Comorb. cm_drug | 0.0720 [0.0506,0.0933]*** | Charlson 7 | 0.0086 [0.0047,0.0124]*** |
| 2004 Q2 | 0.0041 [0.0025,0.0058]*** | 0.0036 [0.0022,0.0050]*** | Black | 0.0067 [0.0019,0.0115]*** | AHRQ Comorb. cm_htn_c | −0.0009 [−0.0028,0.0010] | Charlson 8 | −0.0333 [−0.0407,−0.0258]*** |
| 2004 Q3 | 0.0044 [0.0024,0.0065]*** | 0.0037 [0.0018,0.0056]*** | Hispanic | 0.0362 [0.0159,0.0565]*** | AHRQ Comorb. cm_hypothy | −0.0115 [−0.0142,−0.0087]*** | Charlson 9 | 0.0063 [0.0020,0.0107]*** |
| 2004 Q4 | 0.0038 [0.0011,0.0065]*** | 0.0037 [0.0010,0.0064]*** | Asian | 0.0187 [0.0134,0.0240]*** | AHRQ Comorb. cm_liver | 0.0044 [0.0004,0.0084]** | Charlson 10 | 0.0558 [0.0427,0.0689]*** |
| 2005 Q1 | 0.0020 [−0.0034,0.0074] | 0.0025 [−0.0027,0.0077] | Native American | 0.0008 [−0.0120,0.0137] | AHRQ Comorb. cm_lymph | −0.0332 [−0.0408,−0.0256]*** | Charlson 11 | 0.0130 [0.0071,0.0189]*** |
| 2005 Q2 | 0.0059 [−0.0004,0.0121]* | 0.0062 [0.0002,0.0122]** | Other Race | 0.0353 [0.0167,0.0539]*** | AHRQ Comorb. cm_lytes | 0.0245 [0.0203,0.0287]*** | Charlson 12 | −0.0036 [−0.0060,−0.0012]*** |
| 2005 Q3 | 0.0112 [0.0037,0.0187]*** | 0.0109 [0.0036,0.0182]*** | Unknown Race | 0.0084 [−0.0043,0.0211] | AHRQ Comorb. cm_mets | −0.0244 [−0.0293,−0.0195]*** | Charlson 13 | −0.0193 [−0.0244,−0.0142]*** |
| 2005 Q4 | 0.0093 [0.0024,0.0162]*** | 0.0102 [0.0034,0.0170]*** | Zip in First (Lowest) Income Quartile | 0.0220 [0.0149,0.0291]*** | AHRQ Comorb. cm_neuro | −0.0144 [−0.0176,−0.0111]*** | Charlson 14 | −0.0066 [−0.0111,−0.0021]*** |
| 2006 Q1 | 0.0079 [−0.0005,0.0163]* | 0.0095 [0.0013,0.0176]** | Zip in Second Income Quartile | 0.0170 [0.0107,0.0234]*** | AHRQ Comorb. cm_obese | 0.0027 [0.0002,0.0053]** | Charlson 15 | 0.0248 [0.0188,0.0309]*** |
| 2006 Q2 | 0.0107 [0.0019,0.0195]** | 0.0118 [0.0033,0.0203]*** | Zip in Third Income Quartile | 0.0092 [0.0048,0.0137]*** | AHRQ Comorb. cm_para | −0.0439 [−0.0529,−0.0349]*** | Charlson 16 | 0.0582 [0.0479,0.0686]*** |
| 2006 Q3 | 0.0146 [0.0054,0.0237]*** | 0.0157 [0.0067,0.0247]*** | Zip in Unknown Income Quartile Age | 0.0470 [0.0138,0.0802]*** | AHRQ Comorb. cm_perivasc | −0.0140 [−0.0176,−0.0105]*** | Charlson 17 | −0.0008 [−0.0043,0.0028] |
| 2006 Q4 | 0.0039 [0.0030,0.0048]*** | AHRQ Comorb. cm_psych | −0.0061 [−0.0105,−0.0018]*** | Charlson 18 | −0.0353 [−0.0488,−0.0219]*** | |||
| 2007 Q1 | 0.0109 [0.0030,0.0189]*** | 0.0132 [0.0055,0.0210]*** | Age Squared | −0.0001 [−0.0001,−0.0000]*** | AHRQ Comorb. cm_pulmcirc | −0.0043 [−0.0069,−0.0016]*** | Diagnosis count | −0.0047 [−0.0057,−0.0038]*** |
| 2007 Q2 | 0.0151 [0.0061,0.0241]*** | 0.0170 [0.0082,0.0258]*** | AHRQ Comorb. cm_aids | −0.0296 [−0.0385,−0.0207]*** | AHRQ Comorb. cm_renlfail | −0.0430 [−0.0535,−0.0325]*** | APRDRG Risk mortality | 0.0044 [0.0034,0.0054]*** |
| 2007 Q3 | 0.0145 [0.0049,0.0241]*** | 0.0161 [0.0064,0.0258]*** | AHRQ Comorb. cm_alcohol | 0.0901 [0.0725,0.1077]*** | AHRQ Comorb. cm_tumor | −0.0283 [−0.0334,−0.0231]*** | APRDRG Severity | 0.0013 [−0.0005,0.0030] |
| 2007 Q4 | AHRQ Comorb. cm_anemdef | 0.0063 [0.0038,0.0089]*** | AHRQ Comorb. cm_ulcer | −0.0489 [−0.0573,−0.0405]*** | APSDRG Mortality Weight | 0.0014 [0.0009,0.0019]*** | ||
| 2008 Q1 | 0.0120 [0.0018,0.0222]** | 0.0154 [0.0052,0.0256]*** | AHRQ Comorb. cm_arth | −0.0191 [−0.0251,−0.0131]*** | AHRQ Comorb. cm_valve | −0.0042 [−0.0066,−0.0017]*** | APSDRG LOS Weight | 0.0043 [0.0004,0.0083]** |
| 2008 Q2 | 0.0131 [0.0033,0.0230]** | 0.0162 [0.0063,0.0262]*** | AHRQ Comorb. cm_bldloss | −0.0188 [−0.0244,−0.0133]*** | AHRQ Comorb. cm_wghtloss | 0.0072 [0.0037,0.0107]*** | APSDRG Charge Weight | −0.0056 [−0.0083,−0.0028]*** |
| 2008 Q3 | 0.0181 [0.0060,0.0303]*** | 0.0210 [0.0088,0.0332]*** | AHRQ Comorb. cm_chf | −0.0316 [−0.0386,−0.0246]*** | Charlson 1 | 0.0422 [0.0331,0.0512]*** | ||
| 2008 Q4 | 0.0164 [0.0055,0.0273]*** | 0.0202 [0.0092,0.0313]*** | AHRQ Comorb. cm_chrnlung | −0.0157 [−0.0195,−0.0119]*** | Charlson 2 | 0.0086 [0.0058,0.0115]*** | ||
| Constant | 0.0708 [0.0645,0.0772]*** | 0.0373 [0.0196,0.0551]*** | AHRQ Comorb. cm_coag | 0.0090 [0.0070,0.0110]*** | Charlson 3 | 0.0205 [0.0139,0.0271]*** | ||
| Hospital Indicators | Yes | Yes | AHRQ Comorb. cm_depress | 0.0016 [−0.0007,0.0039] | Charlson 4 | 0.0001 [−0.0021,0.0023] | ||
| Covariates | No | Yes, cont. next cols. | ||||||
| N (Nonelderly) | 23,860,930 | 23,860,930 | AHRQ Comorb. cm_dm | −0.0570 [−0.0688,−0.0452]*** | Charlson 5 | −0.0094 [−0.0131,−0.0058]*** | ||
| R Squared | 0.0659 | 0.0939 |
95% asymptotic CI clustered by state:
***
Significant at .01,
**
Significant at .05,
*
Significant at .10
95% bootstrapped CI, blocks by state, 1000 reps:
+++
Significant at .01,
++
Significant at .05,
+
Significant at .10
All specifications and means weighted using discharge weights.
Coefficients on hospital fixed effects not reported. Omitted categories: MA*Before, 2004 Q1, Male, White, Zip in Fourth Income Quartile.
Source: HCUP NIS 2004–2008 authors’ calculations. See text for more details.