Table 4 Percentage (and number) of studies by quality scores for individual attributes

1. Evidence underpinning pedigrees

8.39%(59)

6.40%(45)

85.21%(599)

n/a

2. Coefficient of inbreeding known

5.26%(37)

n/a

67.14%(472)

27.60%(194)

3. Outcome measures

7.82%(55)

n/a

92.18%(648)

n/a

4. Environment for measurements

54.91%(386)

n/a

18.21%(128)

26.88%(189)

5. Number of replicate populations

59.89%(421)

n/a

40.11%(282)

n/a

6. Number of generations assessed

86.34%(607)

n/a

13.66%(96)

n/a