Background
Methods
Study design
Setting
Participants
Variables
Measurement
Quantitative variables
Bias
Statistical methods
Missing data and loss to follow-up
Results
Participants
Descriptive data
Variable | Mean (SD) or n (%) | Missing values n |
---|---|---|
Type of Kidney Disease | 0 | |
Glomerular | 151 (62) | |
Non-Glomerular | 91 (38) | |
Stage of Kidney Disease at first height value (by Schwartz) | 26a | |
Stage 1 | 49 (23) | |
Stage 2 | 65 (30) | |
Stage 3 | 63 (29) | |
Stage 4 | 24 (11) | |
Stage 5 | 15 (7) | |
Gender | 0 | |
Male | 134 (55) | |
Female | 108 (45) | |
Race | 2 | |
African-American | 93 (38) | |
Non-African American | 147 (62) | |
Age at cohort entry (years) | 0 | |
Mean (SD) | 14.6 (4.4) | |
Median (IQR) | 13.6 (11.4, 16.3) | |
Follow-up duration (years) | 11b | |
Mean (SD) | 4.5 (3.3) | |
Median (IQR) | 4.0 (1.4, 6.3) | |
BMI at first possible calculation | 9 | |
Z-score if < age 18 (n = 207) | 0.91 (1.14) | |
BMI if > = age 18 (n = 36) | 26.1 (6.7) | |
Height | 9 | |
Z-score (at first height) | 0.08 (1.27) | |
Total eGFR measures across all patients | 4094 | |
Age 10–15 | 1702 (41.6) | |
Age 15–20 | 1715 (41.9) | |
Age 20–25 | 715 (17.5) | |
Age 25–30 | 549 (13.4) |
Main results
Ranking | Variable | Rsq | Upper 95% CL | Lower 95% CL |
---|---|---|---|---|
1 | Age | 0.8105 | 0.8187 | 0.8022 |
2 | Gender | 0.5186 | 0.5373 | 0.4998 |
3 | Race | 0.3643 | 0.3861 | 0.3425 |
4 | Height z-score | 0.1107 | 0.1293 | 0.09319 |
5 | Type of CKD | 0.001986 | 0.00576 | 0.0001739 |