Table 3.

Association between covariates and parent performance on four parallel BMI charting questions

Variable	Combined OR of answering a BMI charting question correctly (95% CI)*
WRAT-3R†	1.18 ‡ (1.14, 1.22)
S-TOFHLA†	1.12 ‡ (1.08, 1.16)
Education§	1.24 ‡ (1.15, 1.34)
Income ‡,||
$10,000–$19,999	2.11¶ (1.08, 4.14)
$20,000–$39,999	2.60‡ (1.57, 4.31)
$40,000–$59,999	1.94 (0.78, 4.86)
$60,000+	10.20‡ (4.65, 22.35)
Private insurance\\	2.58 ‡ (1.54, 4.31)
Mean age of youngest child	1.0** (0.91–1.1)
Number of children	0.91†† (0.76–1.08)
Race/ethnicity§§
White	3.13 (1.87–5.26)
Hispanic	0.99 (0.49–2.02)
Other	4.13 (1.24–16.71)

WRAT-3R = Wide Range Achievement Test – mathematics portion, S-TOFHLA = Short Test of Functional Health Literacy in Adults

^*Adjusted for Question, Chart-type, and Site

^†Odds ratio is for every single-point increase in WRAT-3R or S-TOFHLA score

^‡p<.01

^§Odds ratio is for each additional year of education

^||Reference group < $10,000

^¶p <.05

^\\Reference group is public insurance (“no insurance” group was dropped due to model convergence issues with only two in that category).

^**Odds ratio is for each additional year of age

^††Odds ratio is for each additional child

^§§Reference group for all listed is Black