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Table 4 Screening criteria used in premature children for recruitment according to categories of severity of ROP

From: Incidence of retinopathy of prematurity type 1 and type 2 in a regional Hospital of Social Security in the state of Queretaro, Mexico (2017–2018)

 

SCREENING CRITERIA

 

BW < 1750 g only

GA ≤ 34w only

BW < 1750 g and GA ≤ 34w

Other

TOTAL

n

%

n

%

n

%

n

%

n

non RT 1

7

7.4%

13

13.8%

48

51.1%

26

27.7%

94

Mature Retina

1

10.0%

1

10.0%

1

10.0%

7

70.0%

10

Immature Retina

4

8.3%

8

16.7%

20

41.7%

16

33.3%

48

Mild ROP

2

6.9%

2

6.9%

22

75.9%

3

10.3%

29

Type 2 ROP

0

0.0%

2

28.6%

5

71.4%

0

0.0%

7

RT 1

0

0.0%

4

10.5%

33

86.8%

1

2.6%

38

Type 1 ROP

0

0.0%

3

8.3%

32

88.9%

1

2.8%

36

Advanced ROP

0

0.0%

1

50.0%

1

50.0%

0

0.0%

2

All

7

5.3%

17

12.9%

81

61.4%

27

20.5%

132

  1. 1 RT: requiring treatment