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Table 5 Number of studies reporting different forms of variability measures around their means. See text for explanation of terms

From: How does tillage intensity affect soil organic carbon? A systematic review

Concentration study variability measure

Number of studies

Stock study variability measure

Number of studies

None

111

None

85

Undescribed measure

6

Undescribed measure

1

Overall 95% CI

1

Overall 95% CI

1

Overall CV

10

Overall CV

6

Overall LSD

44

Overall LSD

12

Overall LSD/overall p values

1

Overall p values

1

Overall p values

8

Overall SE

2

Overall SE

2

Raw data

3

Overall SED

1

Individual CI

1

Raw data

6

Individual LSD

2

Individual 95% CI

0

Individual SD

15

Individual LSD

4

Individual SE

17

Individual p values

3

Total

146

Individual SD

23

  

Individual SE

50

  

Individual SED

1

  

Total

271

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