TABLE 3.

ZIP model predictions^a

Supplier	Probability of negative sample (CIb )	Mean log10/ml (CI)	Data range (CFU/ml)
Before intervention
A	0.14 (0.08–0.23)	2.08 (2.08–2.08)	0–29,300
B	0.43 (0.35–0.54)	2.00 (2.00–2.00)	0–101,000
Others	0.26 (0.15–0.41)	1.52 (1.51–1.53)	0–37,500
After intervention
A	0.20 (0.15–0.25)	1.59 (1.59–1.59)	0–12,880
B	0.33 (0.27–0.38)	1.15 (1.15–1.16)	0–4,500
Others	0.45 (0.40–0.51)	1.16 (1.16–1.17)	0–3,160

^aThe data range is from the raw data, while the other two values (probability of negative sample and mean log₁₀/ml) are from the ZIP model.

^bCI, confidence interval.