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Table 4 VIHA cancer registry and hospital cancer separations summary statistics.

From: In the absence of cancer registry data, is it sensible to assess incidence using hospital separation records?

Registry

n1

mean2

SD3

minimum4

maximum5

1990–1999

31,976

1.06

0.26

1

4

1990

2,780

1.02

0.13

1

2

1991

3,054

1.03

0.16

1

3

1992

3,179

1.02

0.14

1

3

1993

3,493

1.02

0.14

1

3

1994

3,210

1.02

0.14

1

2

1995

3,231

1.02

0.14

1

3

1996

3,423

1.03

0.17

1

3

1997

3,616

1.02

0.14

1

2

1998

3,538

1.03

0.16

1

3

1999

3,781

1.02

0.16

1

3

Hospital

n 1

mean 2

SD 3

minimum 4

maximum 5

1990–1999

31,203

1.93

1.55

1

34

1990

4,031

1.55

1.10

1

22

1991

4,150

1.54

1.00

1

15

1992

4,252

1.51

0.93

1

12

1993

4,332

1.51

0.90

1

11

1994

4,010

1.47

0.87

1

13

1995

3,939

1.47

0.88

1

16

1996

3,947

1.45

0.91

1

15

1997

4,206

1.42

0.77

1

11

1998

4,067

1.39

0.77

1

15

1999

4,102

1.37

0.72

1

15

  1. For both datasets, the sum of unique study identification numbers each year over the study period will exceed the all-years total, because repeat individuals may span a number of years. For example, in the registry there are 110 study identification numbers in the ten-year period with three primary cancers, but only 15 record all three within a single year.
  2. 1 n total count of unique study identification numbers
  3. 2 mean average number of records per unique study identification number
  4. 3 SD standard deviation
  5. 4 minimum minimum observed records per unique study identification number
  6. 5 maximum maximum observed records per unique study identification number