Table 4 Comparison of various factors before and after intervention.

From: Logistic analysis of delayed reporting of emergency blood potassium and comparison of improved outcomes

 

Before (n = 9,873)

After (n = 13,984)

X2/t

P

TAT (min)

29 (35, 56)

21 (23, 32)

93.9

0.00**

30 min timeout rate (%)

66.9%

11.8%

7754.7

0.00**

Instrument failure rate (%)

45.3%

0.1%

7722.9

0.00**

Specimen waiting time (s)

2317.2 ± 985.9

1507.7 ± 535.2

81.6

0.00**

Report timeout ratio for each group of employees, %(N)

 A

70.3% (196)

10.9% (200)

558.3

0.00**

 B

60.1% (215)

16.1% (20)

71.1

0.00**

 C

68.8% (99)

14.7% (5)

33.1

0.00**

 D

65.6% (1,424)

10.4% (206)

1,323.6

0.00**

 E

61.0% (322)

9.4% (93)

462.4

0.00**

 F

63.8% (932)

16.4% (242)

689.6

0.00**

 G

69.2% (3,414)

11.7% (885)

4,363.5

0.00**

  1. TAT, turnaround time; Specimen waiting time, the time it takes for the specimen to be received by the instrument; **P < 0.01.