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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