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Table 1 Characteristics of participants in the overall survival analysis

From: Coming home to die? the association between migration and mortality in rural South Africa

Age (years)

      

Variable

Total

N = 41,517

External in-migrants

n = 7,867

Internal migrants

n = 4,403

Out-migrants

11,476

Residents

n = 17,771

P-value

Median

28

28

28

24

33

 

Internal Quartile

22 – 39

23 – 36

22 – 37

21–31

22 – 45

 

Range

      

Sex

      

Female

23,372 (56.3%)

4,371 (55.6%)

2,804 (63.7%)

5,865 (51.1%)

10,332 (58.1%)

<0.001

Male

18,145 (43.7%)

3,496 (44.4%)

1,599 (36.3%)

5,611 (48.9%)

7,439 (41.9%)

 

Education

      

Grade 1 to 4

6,790 (16.4%)

1,018 (12.9%)

670 (15.2%)

1,036 (9.0%)

4,066 (22.9%)

 

Grade 5 to 12

26,733 (64.4%)

5,001 (63.6%)

2,803 (63.7)

7,309 (63.7%)

11,620 (65.4%)

 

Tertiary

275 (0.7%)

15 (0.2%)

14 (0.3%)

112 (1.0%)

134 (0.8%)

<0.001

Don't know

2,295 (5.5%)

478 (6.1%)

290 (6.6%)

605 (5.3%)

922 (5.2%)

 

Missing

5,424 (13.1%)

1,355 (17.2%)

626 (14.2%)

2,414 (21.0%)

1,029 (5.8%)

 

Age category:

      

18 to 25

17,484 (42.1%)

3,051 (38.8%)

1,801 (40.9%)

6,384 (55.6%)

6,248 (35.2%)

 

26 to 40

14,380 (34.6%)

3,410 (43.4%)

1,767 (40.1%)

3,910 (34.1%)

5,293 (29.8%)

<0.001

41 to 60

9,653 (23.3%)

1,406 (17.9%)

835 (19.0%)

1,182 (10.3%)

6,230 (35.1%)

 

Economic status

      

< 7 assets

18,735 (45.1%)

3,605 (45.8%)

2,312 (52.5%)

4,605 (40.1%)

8,213 (44.2%)

 

>= 7 assets

19,744 (47.6%)

3,755 (47.7%)

1,670 (37.9%)

5,413 (47.2%)

8,906 (50.1%

<0.001

Missing

3,038 (7.3%)

507 (6.4%)

421 (9.6%)

1,458 (12.7%)

652 (3.7)%

 

Mortality rate/1000 person years

22.5

42.0

26.5

8.6

20.2

 
  1. P-value measures the association between each of the variables and migration status