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Table 1 Construction of the sample and follow-up time by birth year

From: Socioeconomic status and sick leave granted for mental and somatic disorders: a prospective study of young adult twins

 

Chronological time

  

Birth year

‘98

‘99

‘00

‘01

‘02

‘03

‘04

‘05

‘06

‘07

‘08

N linked

N employed

1967

+

+

+

+

+

+

+

+

+

+

+

697

565

1968

+

+

+

+

+

+

+

+

+

+

+

720

548

1969

 

+

+

+

+

+

+

+

+

+

+

726

580

1970

  

+

+

+

+

+

+

+

+

+

657

504

1971

   

+

+

+

+

+

+

+

+

639

512

1972

    

+

+

+

+

+

+

+

601

475

1973

     

+

+

+

+

+

+

622

481

1974

      

+

+

+

+

+

558

439

1975

       

+

+

+

+

541

423

1976

        

+

+

+

532

406

1977

         

+

+

448

350

1978

          

+

529

434

1979

          

+

440

350

Total

Mean follow up time = 6.57 years

7710

6103

  1. The number of individuals linked to registry and the number of individuals sufficiently employed to be followed. Individuals are followed in the years indicated by ‘+’.
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BMC Public Health

ISSN: 1471-2458

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