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. 2009 Apr;44(2 Pt 1):606–617. doi: 10.1111/j.1475-6773.2008.00917.x

Table 3.

Least Square Means of Drug Price in Florida in Each ZIP Code Income Category for Independent and Chain Pharmacies*

Least Square Means (95% Confidence Interval)
Esomeprazole Fluticasone/Salmeterol Clopidogrel Azithromycin
Independent pharmacies
<$20,000 $187 ($182, $192) $221 ($214, $227) $173 ($167, $178) $58 ($55, 61)
$20,000–$40,000 167 (165, 168) 206 (205, 208) 156 (155, 158) 54 (53, 55)
$40,000–$60,000 168 (166, 170) 207 (204, 210) 157 (155, 159) 52 (51, 53)
>$60,000 163 (152, 173) 207 (190, 224) 159 (146, 167) 50 (37, 63)
Chain pharmacies
<$20,000 $162 ($157, $167) $201 ($193, $209) $145 ($137, $152) $51 ($47, $54)
$20,000–$40,000 159 (158, 160) 198 (197, 199) 144 (143, 145) 50 (49, 50)
$40,000–$60,000 160 (158, 161) 199 (197, 201) 144 (143, 146) 50 (49, 50)
>$60,000 160 (157, 164) 197 (192, 203) 148 (144, 152) 49 (48, 51)
*

These are predicted prices from interaction terms of the random intercepts model.

Source: Authors' analysis of data from the 2000 United States Census and Florida pharmacy prescription prices from the MyFloridarx.com website.