The name is absent



26


Stata Technical Bulletin


STB-22


id

activity

age

birth

year

grage

1.

1

nonactiv

22

54

76

-25

2.

1

selfemp

26

54

81

-25

3.

1

selfemp

26

54

81

[25-26

4.

1

selfemp

27

54

81

[26-

ε.

1

selfemp

39

54

93

[26-

6.

2

nonactiv

19

74

93

-25

7.

3

nonactiv

19

65

84

-25

8.

3

selfemp

22

65

87

-25

9.

3

waged

26

65

93

-25

10.

3

waged

26

65

93

[25-26

11.

3

waged

28

65

93

[26-

12.

4

nonactiv

7

70

77

-25

13.

4

nonactiv

20

70

90

-25

14.

4

selfemp

23

70

93

-25

ιε.

ε

nonactiv

4

68

72

-25

16.

ε

waged

11

68

79

-25

17.

ε

nonactiv

22

68

90

-25

18.

ε

waged

26

68

93

-25

19.

6

nonactiv

12

66

78

-25

20.

6

nonactiv

24

66

90

-25

21.

6

waged

26

66

93

-25

22.

6

waged

26

66

93

[25-26

23.

6

waged

27

66

93

[26-

24.

7

nonactiv

24

69

93

-25

25.

8

nonactiv

16

54

70

-25

26.

8

nonactiv

26

54

93

-25

27.

8

nonactiv

26

54

93

[25-26

28.

8

nonactiv

39

54

93

[26-

. tabulate activity sex if grage==l

I Sex

Activityl

Male

Female I

Total

—

nonactiV I

0

1 I

1

waged I

0

2 I

2

selfemp I

1

0 I

1

—

Total I

1

3 I

4

Suppose that we are interested in studying the employment situation at a particular date, say 1991:

. use example, clear

. list id activity age birth year

id

activity

age

birth

year

1.

1

nonactiv

22

54

76

2.

1

selfemp

27

54

81

3.

1

selfemp

39

54

93

4.

2

nonactiv

19

74

93

5.

3

nonactiv

19

65

84

6.

3

selfemp

22

65

87

7.

3

waged

28

65

93

8.

4

nonactiv

7

70

77

9.

4

nonactiv

20

70

90

10.

4

selfemp

23

70

93

11.

5

nonactiv

4

68

72

12.

5

waged

11

68

79

13.

5

nonactiv

22

68

90

14.

5

waged

25

68

93

15.

6

nonactiv

12

66

78

16.

6

nonactiv

24

66

90

17.

6

waged

27

66

93

18.

7

nonactiv

24

69

93

19.

8

nonactiv

16

54

70

20.

8

nonactiv

39

54

93

. slice year, tvid(id) interval(90,91) saving(new91, replace) generate(period)

-90    + ε

[90-91    + 8

[91-     --------

13 records added to 20

Now it is straightforward to analyze the job status


of the four individuals in this sample who reached the age of 26 during


the survey period.




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