Table 1 Odds ratios for individual management practices with moderate/high and high future AFB risk categories as an outcome. Only variables with > 65 observations and a p-value of < 0.3 are included, with the exception of Current/Recent Antibiotic Use. For each variable, the categories analyzed are described with the reference category displayed in brackets.

From: Establishment of apiary-level risk of American foulbrood through the detection of Paenibacillus larvae spores in pooled, extracted honey in Saskatchewan

Management Variable

Categories (Reference in Brackets)

Observations (N)

Odds Ratio (OR)*

95% Confidence Interval

p-value

Occurrence of AFB Within Previous Five Years

Yes (no)

93

11.5

3.3, 40.6

 < 0.001

Beekeeper Size Code

Large-scale (Small-scale)

97

9.3

3.1, 27.3

 < 0.001

Inspection Personnel

Both Owner and Staff (Either Owner or Staff)

96

8.6

3.3, 22.9

 < 0.001

Full-time/ Part-time Status

Full-time (Part-time)

96

8.4

3.0, 23.4

 < 0.001

Highest Confidence Score with AFB Recognition between Owner and Staff

Very Confident (Somewhat or Not Confident)

97

7.5

2.7, 20.8

 < 0.001

Confidence of Owner with AFB Recognition

Very Confident (Somewhat or Not Confident)

97

6.2

2.3, 16.5

 < 0.001

Percentage of Hives Overwintered Indoors

Continuous—each increment equal to 10%

94

1.2

1.1, 1.4

0.001

Movement of Colonies between Apiaries

Sometimes or Often (No)

97

4.3

1.7, 11.1

0.002

Handling of Extracted Honey Supers

No Regard (Try to Retrun Supers to the Same Apiary or Colony)

95

3.4

1.2, 9.3

0.02

Historical Purchase of Used Equipment

Yes (No)

92

8.6

1.1, 68.2

0.04

Selling of Equipment to Other Beekeepers

Yes (No)

96

2.6

0.99, 6.6

0.05

Mobility of Hives

Mobile (Stationary)

97

0.45

0.16, 1.2

0.11

Current/Recent Antimicrobial Use

Current Use/Stopped Use After 2017 (Never used/Stopped Use in 2017 or Before)

96

1.6

0.55, 5.02

0.36

  1. *All odds ratios meet the assumption of proportional hazards.