TABLE 2.

Measures of correlation between caregivers' assessments of children's oral health status and clinically determined treatment needs.

VARIABLE	NO. (%) OF PARTICIPANTS^*	MEAN (SD^†)	RANGE	ρ (95% CL^‡)	P VALUE^§	KENDALL τ–C	HOMOGENEITY TEST^¶P VALUE^#

Entire Sample	108 (100)	— ^**	—	0.44 (0.26, 0.62)	< .005	0.39	—

Caregiver's Age, Years							Not significant
< 29	55 (51)	24.3 (2.8)	18–29	0.49 (0.25, 0.74)	< .005	0.43
≥ 29	53 (49)	36.6 (6.7)	29–63	0.41 (0.16,0.66)	.001	0.35

Children's Age, Month ^††							.03
< 2 years	61 (56)	16.5 (4.0)	7–24	0.29 (0.01, 0.57)	.049	0.23
≥ 2 years	47 (44)	27.8 (2.4)	24–34	0.63 (0.44, 0.83)	< .005	0.59

Caregiver's Oral Health Literacy (REALD-30^‡‡ Score)							Not significant
< 13	15 (14)	8.1 (4.2)	1–12	0.35 (−0.20, 0.89)	.205	0.31
≥ 13	93 (86)	21.6 (4.6)	13–30	0.46 (0.26, 0.66)	< .005	0.40

Study Site							< .001
University clinic	55 (51)	—	—	0.74 (0.63, 0.86)	< .005	0.64
Community clinic	53 (49)	—	—	0.13 (−0.17, 0.43)	.387	0.11

Caregiver's Education							Not significant
High school diploma/GED^§§ credential or less	42 (39)	—	—	0.51 (0.25, 0.77)	<. 005	0.46
Some technical/college or higher	65 (61)	—	—	0.44 (0.19, 0.68)	< .005	0.36

Numbers may not total 108 because of missing information in some strata.

^†

SD: Standard deviation.

^‡

CL: Confidence limits (computed with bootstrapping [10,000 repetitions]).

^§

P values correspond to Spearman rank correlation coefficient ρ.

^¶

The homogeneity test statistic was calculated as follows: χ² = [(ρ_stratum1 − ρ_common)²/se_stratum1²] + [(ρ_stratum2 − ρ_common)²/se_stratum2²], where ρ_stratum1 is the ρ value of the first stratum in each comparison, ρ_stratum2 is the ρ value of the second stratum in each comparison, ρ_common is the ρ value of both strata combined and SE is standard error.⁴⁷

The critical P value threshold for five post hoc tests (α = .20 and a šidák correction of P < .04).

^**

Dash indicates not applicable.

^††

Data in cells are age in months but variable is categorized according to age in years.

^‡‡

REALD-30: Rapid Estimate of Adult Literacy in Dentistry-30. Source: Lee and colleagues.³⁸

^§§

GED: General Educational Development.