Table 4 Summary statistics of proportion of farms, per farm type, and within-farm proportions of 4 batch categories, in 4 clusters determined by k-means clustering

Proportion of farms (N)

0.18 (38)

0.45 (94)

0.25 (51)

0.12 (25)

Proportion of organic farms (N)

0.85 (17)

0.15 (3)

0.00 (0)

0.00 (0)

Proportion of conventional farms (N)

0.12 (19)

0.48 (78)

0.28 (46)

0.12 (19)

Proportion of high health farms (N)

0.13 (2)

0.31 (5)

0.25 (4)

0.31 (5)

Proportion of HyCare farms (N)

0.00 (0)

0.80 (8)

0.10 (1)

0.10 (1)

Mean proportion of PCR⁻ELISA⁻ batches (IQR)

0.03

(0.0–0.0)

0.06

(0.0–0.11)

0.03

(0.0–0.0)

0.25

(0.13–0.38)

Mean proportion of PCR⁺ELISA⁻ batches (IQR)

0.00

(0.0–0.0)

0.02

(0.0–0.0)

0.02

(0.0–0.0)

0.22

(0.14–0.25)

Mean proportion of PCR⁺ELISA⁺ batches (IQR)

0.07

(0.0–0.12)

0.34

(0.29–0.43)

0.67

(0.59–0.75)

0.26

(0.13–0.38)

Mean proportion of PCR⁻ELISA⁺ batches (IQR)

0.90

(0.83–1.0)

0.58

(0.5–0.67)

0.28

(0.21–0.38)

0.27

(0.2–0.38)

Within cluster sum of squares

0.57

2.02

1.57

1.20