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Table 5 Baseline laboratory results

From: Low dose compared to variable dose Warfarin and to Fondaparinux as prophylaxis for thromboembolism after elective hip or knee replacement surgery; a randomized, prospective study

Laboratory tests ARM A ARM B ARM C A vs B A vs C B vs C
p value p value p value
Routine laboratory units (± 1 Standard Deviation)
Hips Hemoglobin 13.9 (1.2) 14.0 (1.4) 13.7 (1.5) 0.921 0.765 0.525
Platelets (x 1,000) 245.3 (51.8) 244.2 (53.8) 252.3 (47.0) 0.993 0.753 0.685
BUN 17.2 (5.0) 17.5 (4.8) 18.0 (7.3) 0.963 0.722 0.865
Creatinine 0.9 (0.2) 0.9 (0.2) 0.9 (0.2) 0.920 0.692 0.448
Bilirubin 0.5 (0.2) 0.5 (0.3) 0.5 (0.2) 0.689 0.914 0.434
ALT 9.3 (8.5) 11.9 (10.8) 11.5 (8.1) 0.294 0.432 0.962
AST 21.9 (7.0) 22.0 (6.3) 21.9 (5.8) 0.998 0.999 0.994
PTT 27.8 (2.3) 27.4 (2.4) 27.8 (2.2) 0.636 0.993 0.701
INR 1.02 (0.05) 1.01 (0.06) 1.02 (0.06) 0.800 0.099 0.814
Knees Hemoglobin 13.6 (1.5) 13.9 (1.5) 13.6 (1.3) 0.430 0.994 0.493
Platelets (x 1,000) 257.8 (59.9) 240.0 (47.0) 244.5 (54.6) 0.153 0.346 0.888
BUN 17.9 (5.0) 17.6 (5.4) 18.6 (5.7) 0.963 0.752 0.589
Creatinine 0.8 (0.2) 0.9 (0.2) 0.9 (0.2) 0.434 0.143 0.786
Bilirubin 0.4 (0.3) 0.5 (0.2) 0.5 (0.3) 0.416 0.934 0.638
ALT 12.6 (12.6) 12.8 (12.0) 12.2 (9.7) 0.995 0.970 0.943
AST 22.9 (8.7) 22.3 (8.0) 22.4 (6.6) 0.899 0.929 0.997
PTT 27.6 (2.4) 28.5 (2.3) 27.8 (1.8) 0.067 0.872 0.192
INR 1.00 (0.05) 1.02 (0.04) 1.02 (0.05) 0.217 0.289 0.985
Total cohort Hemoglobin 13.7 (1.4) 13.9 (1.4) 13.7 (1.4) 0.464 0.921 0.259
Platelets (x 1,000) 252.1 (56.5) 242.0 (50.1) 248.1 (51.2) 0.301 0.829 0.640
BUN 17.6 (5.0) 17.6 (5.1) 18.3 (6.4) 1.000 0.542 0.536
Creatinine 0.9 (0.2) 0.9 (0.2) 0.9 (0.2) 0.790 0.123 0.392
Bilirubin 0.5 (0.3) 0.5 (0.2) 0.5 (0.2) 0.292 1.000 0.293
ALT 11.1 (11.0) 12.4 (11.4) 11.8 (9.0) 0.600 0.853 0.905
AST 22.4 (8.0) 22.2 (7.3) 22.1 (6.2) 0.946 0.943 1.000
PTT 27.7 (2.3) 28.0 (2.4) 27.8 (2.0) 0.596 0.957 0.770
INR 1.01 (0.06) 1.02 (0.05) 1.02 (0.06) 0.767 0.563 0.943