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. 2021 Dec 22;6:360. [Version 1] doi: 10.12688/wellcomeopenres.17360.1

Table 2. Completeness of each variable in the national high-cost drugs dataset.

Variable
Name
Records for FY 2018/19 Records for FY 2019/20
Total
records
%
missing
%
Numeric (and
not missing)
Number
of unique
values
Total
Records
%
missing
%
Numeric (and
not missing)
Number
of unique
values
PersonAge 2,799,394 1.8% 100.0% 114 3,984,198 2.9% 100.0% 125
PersonGender 2,799,394 0.0% 100.0% 3 3,984,198 0.0% 100.0% 4
Activity
Treatment
FunctionCode
2,799,394 9.2% 100.0% 144 3,984,198 6.0% 100.0% 143
Therapeutic
IndicationCode
2,799,394 49.6% 12.6% 7,230 3,984,198 68.3% 36.0% 5,130
HighCostTariff
Excluded
DrugCode
2,799,394 29.0% 78.9% 12,687 3,984,198 43.5% 87.9% 11,722
DrugName 2,799,394 1.0% 0.0% 20,698 3,984,198 1.4% 0.1% 19,609
RouteOf
Administration
2,799,394 7.3% 2.3% 1,213 3,984,198 41.8% 69.9% 625
DrugStrength 2,799,394 24.1% 11.8% 22,887 3,984,198 31.4% 13.1% 9,091
DrugVolume 2,799,394 42.2% 30.3% 12,168 3,984,198 60.8% 22.7% 7,472
DrugPackSize 2,799,394 21.8% 35.6% 7,952 3,984,198 24.7% 48.2% 7,156
DrugQuanitity
OrWeight
Proportion
2,799,394 6.8% 65.5% 10,349 3,984,198 7,4% 65.5% 13,871
UnitOf
Measurement
2,799,394 100.0% 1 23.4% 57 3,984,198 77.7% 84.5% 853
Dispensing Route 2,799,394 12.4% 97.7% 235 3,984,198 24.6% 99.1% 36
HomeDelivery
Charge
2,799,394 1.8% 100.0% 6,190 3,984,198 3.8% 100.0% 11,639
TotalCost 2,799,394 0.2% 100.0% 160,060 3,984,198 0.0% 100.0% 169,294
Derived
SNOMED
2,799,394 92.3% 100.0% 205 3,984,198 91.7% 100.0% 218
DerivedVTM 2,799,394 30.6% 100.0% 684 3,984,198 36.5% 100.0% 737
DerivedVTM
Name
2,799,394 30.6% 0.0% 682 3,984,198 36.5% 0.0% 736

1 Rounded to nearest decimal point - there are 657 non-missing records in total out of 2,799,394