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Table 5 Agreement between control indexes and proxies about frequency of surrogate consumption among 1564 control households with complete information for both respondents

From: Identifying the determinants of premature mortality in Russia: overcoming a methodological challenge

 

Control

Control proxy

Every day or more often

Nearly every day

3–4 times per week

Once or twice a week

1–3 times per month

A few times per year

Never or almost never

Total

Every day or more often

2

0

1

2

1

1

0

7

Nearly every day

1

11

8

12

8

4

0

44

Three or four times a week

0

2

14

39

15

3

3

76

Once or twice a week

0

5

17

159

103

15

3

302

1–3 times a month

1

4

7

100

284

66

12

474

A few times per year

1

4

0

22

100

187

21

335

Never or almost never

0

3

1

8

13

32

269

326

Total

5

29

48

342

524

308

308

1,564

  1. Weighted Cohen's kappa coefficient for agreement between 1564 index-proxy pairs = 0.61