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Table 2 Adjusted odds ratios for low Apgar score at one minute

From: Early Infant Morbidity in the City of São Paulo, Brazil

Variable

Categories

Adjusted Odds Ratios

  

Model 1

Model 2

Model 3

Model 4

Race/ Color (refer: white)

Non-white

1,059*

1,057*

1,071**

1,083**

 

Missing

1,074**

1,075**

1,082***

1,065**

Maternal Education (ref: el, incomplete)

No schooling

0,998

0,985

1,006

1,059

 

Elementary, complete

0,897****

0,893****

0,868****

0,863****

 

Secondary

0,871****

0,871****

0,808****

0,769****

 

College

0,555****

0,557****

0,490***

0,453****

 

Missing

0,891***

0,884***

0,867****

0,862****

Community Development (refer: high)

Low

 

1,039

1,057*

1,090***

 

Medium

 

1,001

1,030

1,097**

Parity (refer: none)

One

  

0,668****

0,739****

 

Two or three

  

0,621****

0,697****

 

Four or More

  

0,667***

0,755****

 

Missing

  

0,759***

0,859***

Maternal Age (refer: 20 to 24)

11 to 14

  

1,239**

1,063

 

15 to 19

  

0,985

0,955*

 

25 to 29

  

1,024

1,005

 

30 to 34

  

1,134****

1,048†

 

35 to 39

  

1,279****

1,111***

 

40 or higher

  

1,626****

1,335****

 

Missing

  

2,460****

1,846**

Infant's Sex (refer: male)

Female

   

0,854****

Plurality (ref: singleton)

Twins/Higher order

   

0,962

 

Missing

   

0,804****

Delivery Mode (refer: normal)

Cesarean

   

1,471****

 

Other

   

3,313****

 

Missing

   

1,514****

Prior Losses (ref: no prior loss)

One

   

1,035

 

Two or More

   

1,065

 

Missing

   

0,855****

Weeks' Gestation (refer: 37–41)

27 or less

   

3,313****

 

28 to 36

   

1,859****

 

42 or more

   

1,587****

 

Missing

   

1,043

Prenatal Visits (ref: 7 or more)

None

   

1,379

 

1 to 6 visits

   

1,039****

 

Missing

   

1,077

Birth Weight (in grams) (refer: 3000 to 3500)

999 or less

   

41,31**

 

1000 to 1499

   

10,45****

 

1500 to 1999

   

4,693****

 

2000 to 2499

   

1,923****

 

2500 to 2999

   

1,135****

 

3000 to 3499

   

1,090***

 

4000 to 4499

   

1,448****

 

4500 or higher

   

1,998****

 

Missing

   

4,112****

  1. *p-value <0.1 **p-value <0.05 ***p-value <0.01 ****p-value <0.001 Source: DATASUS http://www.datasus.gov.br, 2000