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Table 3 Analysis of the independent variables and C-peptide adjusted for fasting time

From: Conditions of gestation, childbirth and childhood associated with C-peptide in young adults in the 1982 Birth Cohort in Pelotas-RS; Brazil

Hierarchical level

Variables

Analysis 1

Analysis 2

  

n

β

CI95%

n

β

CI95%

HL I

Income (multiples of minimum wage)

3660

   

3139

   
 

 < 1

 

1.00

   

1.00

  
 

 1.1–3.0

 

1.04

0.98

1.10

 

1.03

0.96

1.09

 

 3.1–6.0

 

1.14

1.06

1.23

 

1.12

1.03

1.22

 

 > 6.0

 

1.12

1.03

1.23

 

1.07

0.98

1.19

 

Mother’s education (years)

3673

       
 

 < 4

 

1.00

      
 

 5–8

 

1.03

0.97

1.09

    
 

 9–11

 

1.09

1.00

1.18

    
 

 ≥ 12

 

1.05

0.97

1.13

    
 

Mother’s age (years)

3678

       
 

 < 20

 

1.00

      
 

 20–29

 

1.00

0.93

1.07

    
 

 ≥ 30

 

1.01

0.94

1.09

    
 

Mother’s skin color

3677

       
 

 White

 

1.00

   

1.00

  
 

 Non-white

 

0.88

0.83

0.94

 

0.90

0.84

0.96

 

Neonate sex

3678

       
 

 Male

 

1.00

   

1.00

  
 

 Female

 

1.20

1.14

1.25

 

1.22

1.16

1.28

HL II

Maternal smoking

3678

       
 

 No

 

1.00

      
 

 Yes

 

1.01

0.96

1.06

    
 

Maternal weight gain during pregnancy

3109

       
 

 Adequate

 

1.00

      
 

 Insufficient

 

0.99

0.93

1.05

    
 

 Excessive

 

1.02

0.96

1.09

    

HL III

Maternal diabetes

3678

       
 

 No

 

1.00

      
 

 Yes

 

0.84

0.57

1.24

    
 

Maternal hypertension

3675

       
 

 No

 

1.00

      
 

 Yes

 

1.00

0.91

1.11

    

HL IV

Type of childbirth

3678

       
 

 Vaginal

 

1.00

      
 

 Cesarean section

 

1.01

0.96

1.06

    
 

Intrauterine growth restriction

3678

       
 

 No

 

1.00

      
 

 Yes

 

0.98

0.91

1.06

    
 

Birthweight (grams)

3677

       
 

 < 2500

 

1.00

      
 

 2500–2999

 

0.99

0.90

1.10

    
 

 3000–3499

 

0.99

0.91

1.10

    
 

 ≥ 3500

 

0.97

0.88

107

    

HL V

Breastfeeding (months)

3560

       
 

 < 1

 

1.00

      
 

 1–2.9

 

1.02

0.95

109

    
 

 3–5.9

 

0.99

0.92

1.08

    
 

 ≥ 6

 

1.03

0.97

1.10

    
 

Increased weight gain rate (0–2 years old)

2718

       
 

 No

 

1.00

      
 

 Yes

 

1.04

0.98

1.10

    
 

Increased weight gain rate (2–4 years old)

3152

       
 

 No

 

1.00

   

1.00

  
 

 Yes

 

1.13

1.01

1.27

 

1.18

1.05

1.32

  1. Multiple linear regression. Analysis 1: independent variable; C-peptide and fasting time. Analysis 2: Hierarchical level I (HL I): adjusted for sociodemographic variables and fasting time; HL II to V: hierarchically adjusted for variables selected from the previous level and other variables of subsequent levels and fasting time