Table 2.

Statistics for tube usage and blood loss due to phlebotomy for ICU and inpatient patients during hospital stay from 2018 to 2021.

Patient Type	ICU				Inpatient
Year	2018	2019	2020	2021	2018	2019	2020	2021
Patient Number	2753	2939	2890	3314	39,641	32,476	35,698	37,272
Hospital Stays (days)
Mean	13.0	9.1	8.0	7.2	10.3	13.2	13.3	10.4
Median	9.5	6.2	4.6	4.8	3.6	6.0	6.0	4.0
95% Percentile	77.1	90.5	92.0	88.0	95.9	81.8	91.7	119.8
Maximum	42.0	26.0	28.6	23.0	56.0	55.2	57.2	55.0
No. Of Tubes per Patient
Mean	19.6	19.6	21.7	21.7	13.8	12.7	12.3	12.9
Median	12	11	12	13	10	10	9	10
95% Percentile	77.4	75.1	87	84	37	33	32	34
Maximum	582	370	578	545	175	201	204	173
Mean per Day	3.9	3.8	4.6	4.8	2.4	2.3	2.8	3.2
Median Per Day	2.5	2.5	4.3	4.0	1.7	1.6	2.2	2.6
95% Percentile per Day	11.6	11.1	11.7	12.8	7.6	7.0	7.8	8.9
Maximum per Day	26.3	26.7	27.8	30.5	34.6	32.3	24.5	31.2
Blood Loss per Patient (ml)
Mean	75.0	74.5	84.5	86.0	53.8	49.3	47.5	49.9
Median	46.7	43.4	46.8	49.4	39.4	38.7	36.4	38.4
95% Percentile	291.9	284.4	342.8	330.6	148.3	126.5	125.9	134.5
Maximum	2202.7	1417.2	2300.1	2335.7	745.9	739.1	685.0	630.1
Mean per Day	14.7	14.5	17.9	18.7	9.5	8.9	10.8	12.5
Median Per Day	9.8	9.6	16.4	15.6	6.6	6.2	8.3	9.9
95% Percentile per Day	44.7	43.4	45.7	50.2	30.5	27.9	31.6	35.4
Maximum per Day	100.5	98.4	107.9	121.6	158.3	139.4	110.9	130.8
No. Tubes on the First Order
Mean	6.3	6.0	6.4	7.0	6.8	6.4	6.8	7.4
Median	5	5	5	6	6	6	6	7
95% Percentile	14	12	14	14	12	12	12	16
Maximum	22	21	21	23	22	25	23	26
Blood Loss on the First Order (ml)
Mean	25.2	23.8	25.6	28.7	26.9	25.0	26.3	29.1
Median	18.7	19.7	20.7	23.7	24.7	21.7	23.7	25.7
95% Percentile	58.05	48.74	56.4	60.7	50.7	49.7	50.7	67.7
Maximum	89.7	90.7	92.1	100.8	95.7	106.7	104.7	112.7

Note: Mean were calculated as the trimmed average with a truncation ratio of 1%.