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Table 3 Warfarin module metrics in the electronic medical record at our Institution

From: Standardized warfarin monitoring decreases adverse drug reactions

Metric

2013 (Baseline)

2014

2015

2016

2017

P-value

Warfarin prescribed at hospital discharge

N = 925

N = 1027

N = 954

N = 740

N = 665

p < 0.001

 PCP

753 (81.4%)

878 (85.5%)

735 (77.0%)

617 (83.4%)

487 (73.2%)

 

 Cardiology

62 (6.7%)

38 (3.7%)

20 (2.1%)

24 (3.2%)

59 (8.87%)

 

 Others

110 (11.9%)

111 (10.8%)

199 (20.9%)

99 (13.4%)

108 (16.2%)

 

Number of patients on warfarin compared to other anticoagulants

1658/2295

(72.2%)

2073/3430

(60.4%)

2294/4451

(51.5%)

2247/5135

(43.8%)

2650/6301

(42.1%)

p < 0.001

INR within 5 days of hospital discharge

N = 308 (33.3%)

N = 376 (36.6%)

N = 353 (37.0%)

N = 309 (41.8%)

N = 293 (44.0%)

p < 0.01

 PCP

250 (33.2%)

316 (36.0%)

297 (39.4%)

253 (41.0%)

218 (44.8%)

 

 Cardiology

14 (22.6%)

15 (39.5%)

7 (35.0%)

12 (50.0%)

32 (54.2%)

 

 Others

44 (40.0%)

45 (40.5%)

49 (24.6%)

44 (44.4%)

40 (37.0%)

 

INR within 10 days of hospital discharge

N = 456 (49.3%)

N = 573 (55.8%)

N = 510 (53.5%)

N = 460 (62.2%)

N = 397 (59.7%)

p < 0.01

 PCP

369 (49.0%)

487 (55.5%)

409 (55.6%)

382 (61.9%)

299 (61.4%)

 

 Cardiology

28 (45.0%)

25 (65.8%)

13 (65.0%)

15 (62.5%)

37 (62.7%)

 

 Others

59 (53.6%)

61 (55.0%)

88 (44.2%)

63 (63.6%)

54 (50.0%)

 

INR within 30 days of hospital discharge

N = 684 (73.9%)

N = 792 (77.1%)

N = 742 (77.8%)

N = 622 (84.1%)

N = 537 (80.8%)

p < 0.01

 PCP

550 (73.0%)

680 (77.4%)

586 (77.8%)

516 (83.6%)

402 (82.5%)

 

 Cardiology

51 (82.2%)

33 (86.8%)

19 (95.0%)

22 (91.7%)

49 (83%)

 

 Others

83 (75.4%)

79 (71.2%)

137 (68.8%)

84 (84.8%)

78 (72.2%)

 

Time in therapeutic range

 PCP

43,832/71,756

(61.1%)

65,727/108,481

(60.6%)

71,658/116,881

(61.3%)

74,025/121,448

(61.0%)

67,773/108,414

(62.5%)

p = 0.191

 Cardiology

452,620/658,264

(68.8%)

439,047/643,609

(68.2%)

458,181/670,446

(68.3%)

444,692/646,642

(68.8%)

431,225/626,779

(68.8%)

p = 0.182

Electronic health module usage

 PCP

6657/9657

(68.9%)

8356/11,438

(73.0%)

9792/12,680

(77.2%)

10,608/12,832

(82.7%)

10,269/12,202

(84.2%)

p < 0.001

 Cardiology

5154/6733

(76.5%)

7086/9327

(76.0%)

8748/10,844

(80.7%)

8737/10,338

(84.5%)

8127/9520

(85.4%)

p < 0.001

  1. PCP Primary care provider, INR International normalized ratio, ADR Adverse drug reaction