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Table 2 Comparison of demographics by intervention arm

From: Prevention of post-cardiac surgery vitamin D deficiency in children with congenital heart disease: a pilot feasibility dose evaluation randomized controlled trial

Patient characteristic

High dose (n = 21)

Usual care (n = 20)

Age (months), median (IQR)

4.6 (1.0–45.6)

3.8 (0.8–35.6)

Weight (kg), median (IQR)

5.4 (4.2–13.4)

5.8 (3.6–12.9)

Male sex, n (%)

10 (47.6%)

13 (65.0%)

Enrolment location, n (%)

 Cardiology

15 (71.4%)

15 (75.0%)

 NICU

4 (19.0%)

5 (25.0%)

 PICU

2 (9.5%)

0 (0.0%)

Surgery season, n (%)

 Winter

6 (28.6%)

5 (25.0%)

 Spring

3 (14.3%)

2 (10.0%)

 Summer

6 (28.6%)

8 (40.0%)

 Fall

6 (28.6%)

5 (25.0%)

RACHS, median (IQR)

2 (2–3)

3 (2–4)

Ethnicity, n (%)

 Caucasian

14 (66%)

14 (70.0%)

 Aboriginal

1 (5%)

1 (5.0%)

 Asian

0 (0%)

3 (15.0%)

 African/West Indian

2 (10%)

1 (5.0%)

 Unknown or others

4 (19%)

1 (5.0%)

Other active medical conditions, n (%)

7 (33.3%)

7 (35.0%)

 Genetic

5 (71.4%)

3 (42.9%)

 Chronic lung

1 (14.3%)

2 (28.6%)

 Endocrine

1 (14.3%)

1 (14.3%)

 Others

3 (42.9%)

4 (57.1%)

Expected time to surgery at enrolment, n (%)

 < 2 months

18 (86%)

18 (90%)

 > 2 months

3 (14%)

2 (10%)

Children ≤ 1 year, n (%)

 Breastfed

10 (83%)

9 (75%)

 Formula-fed

2 (17%)

3 (25%)