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Table 3 Final multivariate model associations between early collected variables and subsequent study visit compliance (fathers data)

From: Factors assessed in the first year of a longitudinal study predict subsequent study visit compliance: the TEDDY study

Variable

n

B

95%CI

p value

Sociodemographic

    

Country

   

 < 0.001

 Sweden

1492

 

Reference

 

 US

1472

− 0.19

− 0.29, − 0.10

 

 Germany

188

− 1.93

− 2.15, − 1.71

 

 Finland

909

− 0.41

− 0.51, − 0.30

 

Child ethnic minority

   

0.009

 No

3566

 

Reference

 

 Yes

495

− 0.16

− 0.29, − 0.04

 

First child

   

 < 0.001

 No

2339

 

Reference

 

 Yes

1722

0.16

0.08, 0.24

 

Father’s age at child’s birth

4061

0.07

0.04, 0.11

 < 0.001

Study-related variables

    

Fathers’ study satisfaction

4061

0.02

0.002, 0.05

0.029

  1. Subject excluded: children islet autoantibodies positive before 4 years of age
  2. Long distance participation status was used as a covariate in the analysis
  3. °Father’s age. In the analysis fathers age/5 is used
  4. ¤Fathers’ study satisfaction was measured at child-age ≤ 15 months