Table 3 Estimates of the multilevel linear regression model of the relationship between log transformed normalized SGH OD values and sampling time, location and dog seropositivity to L. infantum. “Dog” was included as a random effects variable

Intercept

2.40

0.06

<0.001

Sampling month

February 2016

Ref

–

–

August 2016

0.54

0.06

<0.001

October 2016

0.20

0.03

<0.001

January 2017

-0.06

0.03

0.013

April 2017

-0.01

0.03

0.666

Location

Aiguaviva

Ref

–

–

Ordis

0.07

0.11

0.562

Madremanya

0.08

0.10

0.427

Vidreres

0.10

0.11

0.393

Massanes

0.07

0.09

0.441

Hostalnou de Bianya

-0.08

0.10

0.404

Montagut

0.22

0.10

0.024

St. Esteve de Llémena

-0.03

0.11

0.786

Canet d'Adri

-0.02

0.11

0.891

St. Feliu de Guíxols

0.16

0.15

0.308

Riells i Viabrea

0.03

0.09

0.703

Vilobí d'Onyar

-0.02

0.09

0.791

L. infantum seropositivity

Seronegative

Ref

–

–

Seropositive

0.10

0.04

0.013