Table 3 Association of applied pest control methods and practices, with cockroach infestations by univariate analysis

Cockroaches observed by crew

9 (81.8)

2 (20.0)

4.09 (1.14–14.57)

Flies observed by crew

6 (60.0)

5 (45.5)

1.32 (0.58–3.00)

Regular visual inspections by crew

10 (58.8)

1 (25.0)

2.35 (0.41–13.45)

Use of spray pesticide by crew

10 (66.7)

1 (16.7)

4.00 (0.64–24.80)

Fumigation application

2 (40.0)

7 (58.3)

0.68 (0.21–2.22)

Absence of cockroach monitoring record log

10 (71.4)

1 (14.3)

5.00 (0.79–31.62)

Pesticide A: Cyfluthrin/spray

7 (87.5)

4 (30.8)

2.84 (1.20–6.96)

Pesticide B: Fripronil/gel

8 (80.0)

3 (27.3)

2.93 (1.06–8.08)

Pesticide C: Alphacypermethrin/spray

5 (83.3)

6 (40.0)

2.08 (1.01–4.26)

Pesticide D: Deltamethrin/spray

1 (50.0)

10 (52.6)

0.95 (0.22–4.05)

Pesticide E: Methylisobutylketone/spray

1 (50.0)

10 (52.6)

0.95 (0.22–4.05)

Pesticide F: Permethrin/smoke generator

2 (66.7)

9 (50.0)

1.33 (0.52–3.3)

Other factors

   Pet transportation on board

7 (53.8)

4 (50.0)

1.07 (0.45–2.53)

   HACCP application

1 (16.7)

10 (71.4)

0.23 (0.03–1.43)

   Itinerary: North-East Aegean

5 (83.3)

6 (40.0)

2.08 (1.01–4.26)

   Itinerary: Cyclades

5 (55.6)

6 (50.0)

1.11 (0.49–2.50)