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Table 3 Regression Results for Paraiba (PB) and Sao Paulo (SP), showing time trend estimates and 95 % confidence intervals, adjusted R2 and p-value from the F test

From: Does Pharmaceutical Pricing Transparency Matter? Examining Brazil’s Public Procurement System

Drug Sample size Time trend estimate PB Time trend estimate SP Adj R2 P-value
Aciclovir 200 59 0.878 (0.795, 0.981) 0.931 (0.783, 1.131) 0.373 <0.0001
Amoxicillin 500 207 1.100 (0.986, 1.268) 0.981 (0.916, 1.058) 0.695 <0.0001
Aspirin 100 77 1.032 (0.919, 1.243) 1.045 (0.925, 1.246) 0.644 <0.0001
Atenolol 50 31 0.939 (0.762, 1.076) 0.966 (0.694, 1.553) 0.09 0.171
Captopril 12,5 48 1.218 (0.998, 1.466) 1.053 (0.703, 1.541) 0.65 <0.0001
Diazepam 5 54 1.059 (0.986, 1.186) 0.999 (0.858, 1.178) 0.338 <0.0001
Dipyrone 500 269 1.070 (0.944, 1.260) 0.993 (0.936, 1.052) 0.481 <0.0001
Enalapril 10 42 1.050 (0.857, 1.388) 1.286 (0.950, 1.567) 0.227 0.008
Fluoxetin 20 36 0.931 (0.523, 1.477) 1.098 (0.826, 1.585) 0.085 0.151
Furosemide 40 84 1.049 (0.921, 1.167) 0.961 (0.789, 1.140) 0.575 <0.0001
Glibenclamide 5 41 1.074 (0.938, 1.235) 1.201 (0.851, 2.133) 0.22 0.011
Hydrochlorothiazide 25 30 1.237 (0.987, 2.255) 0.856 (0.489, 1.174) 0.371 0.003
Metformin 850 37 0.856 (0.777, 0.928) 0.939 (0.771, 1.037) 0.242 0.011
Omeprazol 20 111 0.862 (0.692, 1.046) 0.967 (0.860, 1.082) 0.368 <0.0001
Paracetamol 500 170 1.146 (1.031, 1.268) 1.074 (0.962, 1.190) 0.735 <0.0001
Propranolol 40 57 1.022 (0.860, 1.344) 1.024 (0.826, 1.295) 0.2 0.003
Ranitidine 150 105 1.034 (0.957, 1.115) 1.127 (1.021, 1.246) 0.478 <0.0001
Tramadol 50 55 0.761 (0.681, 0.949) 1.067 (0.847, 1.466) 0.46 <0.0001
Warfarin 5 40 0.837 (0.759, 0.975) 1.035 (0.899, 1.218) 0.626 <0.0001