Table 1

Hospital and market characteristics in study sample

Basic metabolic panelComplete CBC with/automated differential WCCComprehensive metabolic panelLipid panelComplete CBC automatedAssay thyroid-stimulating hormoneAssay of ck (cpk)Assay of troponin quantProthrombin TimeThrombo-plastin time, partial
Hospital-level characteristics
N (%)
Total number of hospitals reporting blood test189186183178171170166169180167
Ownership
Government24 (13)21 (11)24 (13)25 (14)20 (12)20 (12)23 (14)22 (13)21 (12)20 (12)
 Non-profit118 (62)117 (63)113 (62)108 (61)112 (65)104 (61)108 (65)102 (60)112 (62)100 (60)
 For-profit47 (25)48 (26)46 (25)45 (25)39 (23)46 (27)35 (21)45 (27)47 (26)47 (28)
Location
 Urban169 (89)167 (90)164 (90)158 (89)155 (91)151 (89)148 (89)149 (88)161 (89)148 (89)
 Rural20 (11)19 (10)19 (10)20 (11)16 (9)19 (11)18 (11)20 (12)19 (11)19 (11)
Teaching status
 Yes14 (7)14 (8)13 (7)13 (7)15 (9)13 (8)13 (8)12 (7)15 (8)13 (8)
 No175 (93)172 (92)170 (93)165 (93)156 (91)157 (92)153 (92)157 (93)165 (92)154 (92)
Mean (SD)
Case mix (tertiles)
 Low1.27 (0.13)1.27 (0.13)1.26 (0.13)1.27 (0.14)1.28 (0.12)1.27 (0.14)1.25 (0.14)1.26 (0.14)1.26 (0.14)1.26 (0.14)
 Medium1.55 (0.06)1.55 (0.06)1.55 (0.06)1.55 (0.06)1.56 (0.06)1.55 (0.06)1.54 (0.06)1.55 (0.05)1.55 (0.05)1.55 (0.06)
 High1.81 (0.19)1.81 (0.19)1.80 (0.18)1.81 (0.19)1.80 (0.17)1.81 (0.20)1.80 (0.17)1.80 (0.20)1.81 (0.19)1.81 (0.20)
Licensed beds269 (174)271 (175)269 (172)266 (175)276 (180)268 (177)266 (176)266 (177)269 (177)269 (177)
% Medicare42% (12)41% (13)41% (13)42% (13)41% (13)41% (12)41% (12)41% (12)41% (12)41% (13)
% Medicaid25% (15)25% (16)25% (16)25% (15)25% (16)25% (15)25% (15)25% (15)25% (15)25% (16)
Market-level characteristics
N (%)
Herfindal-Hirschman Index
 Low63 (33)64 (34)64 (35)60 (34)57 (33)58 (34)60 (36)59 (35)60 (33)56 (34)
 Medium82 (43)60 (32)58 (32)75 (42)73 (43)72 (42)66 (40)54 (32)77 (43)69 (41)
 High44 (23)62 (33)61 (33)43 (24)41 (24)40 (24)40 (24)56 (33)43 (24)43 (26)
Mean (SD)
Wage Index1.29 (0.16)1.29 (0.16)1.29 (0.16)1.30 (0.16)1.30 (0.16)1.30 (0.16)1.29 (0.16)1.30 (0.16)1.30 (0.16)1.30 (0.16)
% Without insurance19% (4)19% (4)19% (4)19% (4)19% (4)19% (4)19% (4)19% (4)19% (4)19% (4)
% Below poverty line13% (4)13% (4)13% (4)13% (4)13% (4)13% (3)14% (4)13% (4)13% (4)13% (4)
  • CBC, complete blood cell count; ck, creatine kinase; WCC, white cell count.