TABLE 3

Adjusted Mean Difference (95% CI) in Fall PALS-K Summary Score by Participant Characteristics From a Multiple Linear Regression Model

	Mean Difference	95% CI
BLL
0–4 µg/dL	0.00	Reference
5–9 µg/dL	−4.51	−6.16 to –2.85
≥10 µg/dL	−10.13	−13.30 to −6.96
Gender
Female	0.00	Reference
Male	−2.80	−4.31 to −1.30
Year
2004–2005	0.00	Reference
2005–2006	3.53	1.58 to 5.49
2006–2007	3.71	1.74 to 5.69
Age group
<5 years, 3 months	0.00	Reference
5 years, 3 months, to <5 years, 6 months	2.68	0.60 to 4.77
5 years, 6 months, to <5 years, 9 months	6.57	4.49 to 8.65
≥5 years, 9 months	8.26	6.03 to 10.49
Race
Hispanic	0.00	Reference
White	6.85	4.23 to 9.47
Black	6.05	3.77 to 8.32
Other	2.51	−1.18 to 6.20^*
Language
English	0.00	Reference
Spanish	−8.43	−10.41 to −6.44
Other	−12.74	−17.91 to −7.57
Free/reduced/pay lunch status
Pay for lunch	0.00	Reference
Reduced lunch	−4.18	−7.56 to −0.80
Free lunch	−10.31	−12.91 to −7.71
Constant^a	50.41	46.37 to 54.45
R²	0.1345

Final model adjusted for GM BLL category, gender, year, age at time of test, race, child language, and free/reduced lunch status.
↵a Refers to the average score for a 5- to 5-1/4-year-old Hispanic female, speaking English, who pays for lunch, and with a BLL of 0 to 4 µg/dL in 2004–2005.
↵* P = .182.