. Author manuscript; available in PMC: 2019 Aug 1.

Published in final edited form as: J Pediatr. 2018 Apr 26;199:267–271. doi: 10.1016/j.jpeds.2018.03.031

Table 2.

Crude and adjusted associations between demographic and clinical characteristics and chronic school absenteeism

	Crude RR	95% CI	Adjusted RR	95% CI
Age (years)
<11	1.0	Reference	-	-
11-14	0.86	0.57-1.3	-	-
>14	0.80	0.52-1.2	-	-
Gender
Female	1.0	Reference	-	-
Male	0.65	0.46-0.91	-	-
Insurance^a
Private	1.0	Reference	1.0	Reference
Public	1.9	1.3-2.7	1.7	1.2-2.4
Race/Ethnicity
Caucasian/Non-Hispanic	1.0	Reference	-	-
Caucasian/Hispanic	0.70	0.34-1.5	-	-
African American	1.02	0.64-1.6	-	-
Other	1.5	0.96-2.3	-	-
Maternal Education
High school or less	1.0	Reference	-	-
Some college	0.96	0.65-1.4	-	-
College graduate	0.52	0.33-0.83	-	-
eGFR (mL/min/1.73m²)
≥60	1.0	Reference	-	-
<60	0.80	0.56 – 1.1	-	-
CKD Etiology
Non-Glomerular	1.0	Reference	-	-
Glomerular	1.6	1.1-2.2	-	-
Anemia^b
No	1.0	Reference	1.0	Reference
Yes	1.8	1.2-2.5	1.6	1.1-2.3
Hyperphosphatemia
No	1.0	Reference	-	-
Yes	1.5	0.84-2.8	-	-
Short Stature^b
No	1.0	Reference	1.0	Reference
Yes	1.8	1.1-2.8	1.5	0.99-2.4
Hypertension
No	1.0	Reference	-	-
Yes	1.4	1.0-2.0	-	-
Enuresis
No	1.0	Reference	-	-
Yes	1.6	1.0-2.4	-	-
Catheterization^c
No	1.0	Reference	1.0	Reference
Yes	1.9	1.2-3.0	2.2	1.4-3.7
Medication Burden
1 to 4	1.0	Reference	-	-
5 to 9	2.3	1.6-3.4	-	-
≥ 10	4.2	2.6-6.7	-	-

RR = relative risk, CI = confidence interval, eGFR = estimated glomerular filtration rate, CKD = chronic kidney disease

Adjusted for maternal education

Adjusted for insurance carrier

Adjusted for type/etiology of kidney disease (glomerular v. non-glomerular)