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. 2021 Jun 15;61:240–244. doi: 10.1016/j.pedn.2021.06.005

Table 2.

Pre-COVID-19 demographics with descriptive analyses between groups.

N (%) for both groups N (%) of CHD infants N (%) of HC infants Statistical test Statistical value
Neonatal time point

Group
 Healthy Controls (HC)
 Congenital Heart Disease (CHD)

19 (39.6)
29 (60.4)
Sex
 Male
 Female
 Missing

20 (41.7)
25 (52.1)
3 (6.3)

8 (30.8)
18 (69.2)
0 (0.0)

12 (63.2)
7 (36.8)
0 (0.0)
Pearson's χ2 test χ2 = 4.66
Ethnicity
 Caucasian
 Hispanic/Latino
 Asian/Pacific Islander
 African American
 Other
 Missing

7 (14.6)
31 (64.6)
2 (4.2)
2 (4.2)
3 (6.3)
3 (6.3)

3 (11.5)
20 (76.9)
2 (7.7)
1 (3.8)
0 (0.0)
0 (0.0)

4 (21.1)
11 (57.9)
0 (0.0)
1 (5.3)
3 (15.8)
0 (0.0)
Fisher's Exact test χ2 = 6.27
Gestational age at exam (weeks), Mean (±SD)a 40.7 (±0.5) 40.5 (±0.3) 41.1 (±0.4) T-test t = 5.76⁎⁎

3-month time point

Group
 HC
 CHD

21 (47.7)
23 (52.3)
Sex
 Male
 Female

23 (52.3)
21 (47.7)

12 (52.2)
11 (47.8)

11 (52.4)
10 (47.6)
Pearson's χ2 test χ2 < 0.01⁎⁎
Ethnicity
 Caucasian
 Latino
 Asian/Pacific Islander
 Other
 Missing

5 (11.4)
30 (68.2)
4 (9.1)
1 (2.3)
4 (9.1)

1 (4.3)
18 (78.3)
2 (8.7)
1 (4.3)
1 (4.3)

4 (19.0)
12 (57.1)
2 (9.5)
0 (0.0)
3 (14.3)
Fisher's Exact test χ2 = 4.74

6-month time point

Group
 HC
 CHD

16 (40.0)
24 (60.0)
Sex
 Male
 Female

17 (42.5)
23 (57.5)

11 (45.8)
13 (54.2)

6 (37.5)
10 (62.5)
Pearson's χ2 test χ2 = 0.27
Ethnicity
 Caucasian
 Latino
 Asian/Pacific Islander
 African American
 Other

4 (10.0)
27 (67.5)
3 (7.5)
3 (7.5)
3 (7.5)

2 (8.3)
18 (75.0)
1 (4.2)
2 (8.3)
1 (4.2)

2 (12.5)
9 (56.3)
2 (12.5)
1 (6.3)
2 (12.5)
Fisher's Exact test χ2 = 2.90

9-month time point

Group
 HC
 CHD

10 (33.3)
20 (66.7)
Sex
 Male
 Female

11 (36.7)
19 (63.3)

8 (40.0)
12 (60.0)

3 (30.0)
7 (70.0)
Fisher's Exact test χ2 = 0.29
Ethnicity
 Caucasian
 Latino
 Asian/Pacific Islander
 African American
 Other

3 (10.0)
22 (73.3)
0 (0.0)
3 (10.0)
2 (6.7)

2 (10.0)
16 (80.0)
0 (0.0)
2 (10.0)
0 (0.0)

1 (10.0)
6 (60.0)
0 (0.0)
1 (10.0)
2 (20.0)
Fisher's Exact test χ2 = 4.02

p < 0.05. **p < 0.01.

a

Gestational age at exam is expressed as mean (±SD), while all other variables are expressed as n (%).