Table 4.

Comparison of adolescent SSD groups on demographics (gender, age, PIQ, and SES).

Group	Adolescent demographic
	Male:female ratioa	Age in years M (SD)	PIQb,c,e M (SD)	SESb,d (%)
				1	2	3	4	5
No SSD-AD (n = 137)	68:69	13.96 (2.09)	110.00 (12.10)	2	10	17	33	38
Resolved SSD (n = 105)	72:33	14.02 (1.93)	105.48 (15.33)	2	7	14	42	35
Low MSW (n = 33)	22:11	13.53 (1.93)	99.69 (15.00)	19	3	26	23	29
Persistent SSD (n = 41)	29:12	13.43 (1.77)	94.80 (16.48)	0	7.5	27.5	35	30
Total (N = 316)	191:125	13.87 (1.99)	105.08 (15.75)	4	8	18	35	35

Note. SSD = speech sound disorders; PIQ = Performance IQ scores from the WISC-III or WAIS-IV; SES = Ratings on the Hollingshead Four Factor Index of Social Class (1 = low SES, 5 = high SES); MSW = Multisyllabic Word Repetition task. For male:female ratio, χ²(3, 315) = 11.94, p = .0074. For age in years, η² = .013, F(3, 315) = 1.32, p = .2688. For PIQ, η² = .121, F(3, 264) = 11.94, p < .0001. For SES, η² = .024, χ²(8, 309) = 34.33, p = .0006.

^aNo SSD-AD group differs from resolved group.

^bNo SSD-AD group differs from low MSW group.

^cNo SSD-AD group differs from persistent SSD group.

^dResolved SSD group differs from low MSW group.

^eResolved SSD group differs from persistent SSD group.