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Table 1 Birth weight, gestational age and postmentrual age at the time of diagnosis or presentation 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)

 

Prematures

BW (g) (CI 95%) [range]

GA (CI 95%) [range]

1st Ev2 (CI 95%) [range]

PMA (CI 95%) [range]

Last Ev2 (CI 95%) [range]

No Ev2 (CI 95%) [range]

n

%

non RT 1

94

71.2%

1707 ± 121

33w 2d ± 0w 4d

37w 3d ± 0w 5d

38w 4d ± 0w 5d

43w 6d ± 1w 2d

3.62 ± 0.65

[630, 4700]

[27w 0d, 42w 0d]

[31w 0d, 51w 0d]

[33w 0d, 50w 6d]

[35w 0d, 71w 0d]

[1, 15]

Mature Retina

10

7.6%

2331 ± 553

36w 2d ± 1w 2d

40w 5d ± 1w 6d

40w 5d ± 1w 6d

40w 5d ± 1w 6d

1.00 ± 0

[1720, 4700]

[32w 0d, 40w 0d]

[34w 6d, 44w 2d]

[34w 6d, 44w 2d]

[34w 6d, 44w 2d]

[1]

Immature Retina

48

36.4%

1801 ± 151

33w 5d ± 0w 5d

38w 2d ± 1w 0d

38w 2d ± 1w 0d

41w 6d ± 1w 3d

2.23 ± 0.48

[1010, 3600]

[28w 0d, 42w 0d]

[32w 0d, 51w 0d]

[33w 0d, 50w 6d]

[35w 0d, 56w 0d]

[1, 9]

Mild ROP

29

22.0%

1433 ± 141

31w 6d ± 0w 6d

35w 5d ± 1w 2d

38w 4d ± 1w 2d

47w 6d ± 2w 4d

6.31 ± 1.27

[630, 2560]

[27w 0d, 36w 0d]

[31w 0d, 50w 0d]

[33w 4d, 49w 5d]

[38w 0d, 71w 0d]

[1, 15]

Type 2 ROP

7

5.3%

1304 ± 278

31w 0d ± 0w 5d

34w 5d ± 1w 3d

37w 0d ± 3w 0d

45w 3d ± 6w 1d

5.71 ± 2.52

[950, 1830]

[29w 0d, 32w 0d]

[31w 0d, 37w 0d]

[33w 5d, 45w 4d]

[35w 0d, 55w 0d]

[2, 12]

RT 1

38

28.8%

1316 ± 110

30w 4d ± 0w 5d

35w 1d ± 0w 6d

37w 3d ± 0w 5d

47w 3d ± 2w 3d

8.84 ± 1.13

[830, 2220]

[26w 0d, 35w 0d]

[29w 0d, 40w 0d]

[31w 1d, 42w 1d]

[33w 0d, 66w 0d]

[3, 16]

Type 1 ROP

36

27.3%

1310 ± 112

30w 4d ± 0w 5d

34w 6d ± 0w 5d

37w 2d ± 0w 5d

46w 4d ± 2w 1d

8.91 ± 1.13

[830, 2220]

[26w 0d, 35w 0d]

[29w 0d, 40w 0d]

[31w 1d, 42w 1d]

[33w 0d, 66w 0d]

[3, 16]

Advanced ROP

2

1.5%

1425 ± 735

29w 3d ± 4w 6 d

39w 1d ± 1w 6d

39w 1d ± 1w 6d

63w 0d ± 5w 6d

5.00 ± 1.96

[1050, 1800]

[27w 0d, 32w 0d]

[38w 0d, 40w 0d]

[38w 2d, 40w 1d]

[60w 0d, 66w 0d]

[4, 6]

  1. 1 RT: requiring treatment
  2. 2 Ev: evaluation