Biomedical Science Letters

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Table. 5.

The analysis of workload

Value Ultrasound Total (n=216) Primary hospital (n=21) Secondary hospital (n=95) Tertiary hospital (n=96) Examination center (n=4) P-value
Mean number of ultrasound for 1 day Echo 12.0±5.02 7.8±4.88 11.9±5.17 12.6±4.63 14.0±8.49 0.163
TCD 6.5±4.67 6.6±5.02 6.0±5.02 6.7±3.85 12.0±11.31 0.333
Carotid 4.5±3.98 4.4±3.12 4.6±4.3 4.6±4.00 - 0.999

Normal test time Echo 17.0±7.46 15.8±3.76 15.9±7.06 18.5±8.16 12.5±3.54 0.318
TCD 24.9±11.03 20.2±8.40 27.4±13.1 24.0±8.57 15.0±7.07 0.073
Carotid 17.1±9.63 12.50±6.57 13.8±9.34 20.4±9.22 - 0.001

Abnormal test time Echo 31.3±10.32 30.8±6.65 29.8±9.15 32.9±11.94 30.0±0.00 0.584
TCD 37.3±15.78 32.1±14.64 41.2±18.20 35.3±12.53 25.0±7.07 0.088
Carotid 27.1±12.34 20.0±6.03 24.38±12.62 30.5±12.04 10.0±0.00 0.005

Number of tests (30~59 min) for 1 day Echo 5.1±6.48 5.0±2.16 4.6±7.04 5.8±6.48 15.0±0.71 0.764
TCD 4.4±7.51 10.0±16.79 4.5±8.24 3.3±2.17 - 0.137
Carotid 2.5±1.90 3.8±1.64 2.1±1.60 2.49±2.00 - 0.239

Number of tests (≥ 60 min) for 1 day Echo 1.7±1.05 - 1.9±1.36 1.6±0.89 - 0.504
TCD 2.2±1.62 3.0±2.16 1.9±1.23 2.3±1.74 - 0.429
Carotid 2.3±1.73 3.5±2.12 1.5±1.07 2.6±1.91 - 0.229

Annual quantitative workload (hour) Echo 1.631±151 1,721±91 1,645±148 1,603±172 1,725±74 <0.001
TCD 1,652±214 1,723±144 1,672±243 1,598±133 - <0.001
Carotid 1,626±117 1,746±35 1,639±123 1,589±119 - <0.001

Annual qualitative workload Echo 0.87±0.09 0.84±0.06 0.88±0.08 0.86±0.10 0.81±0.09 0.672
TCD 0.95±0.11 0.90±0.09 0.97±013 0.92±0.06 - 0.162
Carotid 0.84±0.08 0.75±0.09 0.82±0.08 0.88±0.08 - 0.002

Values are mean ± standard deviation. TCD, transcranial Doppler

Biomed Sci Letters 2019;25:381-9 https://doi.org/10.15616/BSL.2019.25.4.381
© 2019 Biomed Sci Letters