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Table 1 Attrition across Surveys 1 to 5 in the ALSWH, for women born in 1921-26.

From: The impact of attrition on the representativeness of cohort studies of older people

Survey

Respondent

Dead

Frail

Withdrawn

Lost to Follow Up

1

100.0%

-

-

-

-

2

83.9%

4.5%

0.8%

4.7%

6.1%

3

69.6%

9.9%

2.6%

9.0%

9.0%

4

57.6%

18.4%

4.4%

10.9%

8.7%

5

44.7%

28.4%

5.1%

11.4%

10.4%

  1. Total number of women at each survey is 12 432.