Variables | Fragile X syndrome | Down syndrome | ||||||
---|---|---|---|---|---|---|---|---|
Baseline | Time 2 | Time 3 | Time 4 | Baseline | Time 2 | Time 3 | Time 4 | |
Chronological age | n = 37 12.9 (1.7) 10.2–16 | n= 33 13.7 (1.7) 11.2–17 | n= 32 14.9 (1.8) 12.2–18 | n= 32 15.8 (1.7) 13.2–19 | n= 20 12.8 (1.9) 10.2–15.9 | n= 18 13.9 (2) 11.2–17 | n= 16 14.8 (2) 12.2–17.9 | n= 13 15.4 (1.9) 13.3–19 |
NV cognition (Leiter-R GS) | n= 35 466.3 (9.4) 446–489 | n= 30 468.5 (10) 440–489 | n= 31 468 (9.5) 446–489 | n= 30 468.5 (10.2) 438–489 | n= 19 460.3 (7.2) 442–474 | n= 17 463.3 (8.4) 450–480 | n= 15 465.3 (9.1) 449–483 | n= 13 469.5 (9.8) 452–490 |
NV cognition (Leiter-R age equivalents) | n= 36 5.4 (1.1) 3.3–8.3 | n= 33 5.5 (1.3) 2.8–9.5 | n= 32 5.5 (1.1) 3.4–8.2 | n= 32 5.5 (1.2) 2.9-8.6 | n= 20 4.7 (0.7) 3.1–6.4 | n= 18 4.9 (1.1) 2.7–7.4 | n= 16 5.2 (1) 3.6–7.5 | n= 13 5.7 (1.1) 3.8–8 |
Conversation | n= 33 | n= 33 | n= 28 | n= 30 | n= 17 | n= 16 | n= 11 | n= 10 |
Syntactic complexity | 4.0 (1.4) 1.9–7.0 | 3.9 (1.7) 1.3–8.4 | 3.8 (1.6) 1.2–7.2 | 3.3 (1.5) 1.2–7.4 | 2.9 (0.8) 1.8–4.3 | 2.9 (0.6) 2.0–4.1 | 3.0 (1.1) 1.4–5.1 | 2.8 (1.2) 1.6–5.5 |
Lexical diversity | 86.9 (28.2) 19–138 | 83.8 (33.0) 17–141 | 82.5 (31.4) 21–136 | 73.7 (30.9) 24–135 | 64.9 (15.8) 40–90 | 65.6 (17.5) 39–101 | 65.4 (23.3) 27–103 | 63.3 (16.9) 43–86 |
Talkativeness | 12.7 (3.5) 6.5–20.2 | 12.9 (4.1) 4.5–20.4 | 14.8 (3.4) 6.0–22.5 | 15.1 (5.0) 3.6–23.9 | 12.9 (3.6) 6.9–17.9 | 12.8 (4.3) 3.3–19.2 | 11.4 (3.1) 6.7–16.8 | 11.8 (4.1) 5.4–18.9 |
Dysfluency | 0.2 (0.1) 0–0.5 | 0.2 (0.1) 0–0.5 | 0.1 (0.1) 0.02–0.5 | 0.2 (0.1) 0.01–0.4 | 0.2 (0.2) 0.01–0.7 | 0.3 (0.2) 0.03–0.6 | 0.2 (0.1) 0.04–0.5 | 0.2 (0.2) 0.02–0.6 |
Narration: | n= 34 | n= 31 | n= 31 | n= 29 | n= 18 | n= 15 | n= 12 | n= 10 |
Syntactic complexity | 4.7 (1.7) 1–8 | 4.7 (1.7) 1.5–8.7 | 4.3 (1.8) 1.5–8.5 | 4.4 (1.7) 1.6–8.5 | 3.5 (1.4) 1.2–6 | 3.7 (1.2) 2–6.2 | 4.6 (1.5) 1.6–6.8 | 4.1 (2.2) 1.9–8.2 |
Lexical diversity | 61.0 (28.7) 1–128 | 62.1 (28.6) 11–123 | 61.1 (33.0) 15–122 | 55.1 (27.5) 9–108 | 40.8 (23.6) 5–79 | 43.7 (25.2) 2–83 | 57.3 (26.4) 24–103 | 44.1 (25.8) 15–87 |
Talkativeness | 11.4 (4.7) 0.3–22.1 | 11.3 (4.4) 4.1–17.4 | 12.1 (4.9) 4.1–22.5 | 12.1 (5.6) 3.9–29.9 | 7.0 (3.0) 3.2–14.1 | 6.4 (3.1) 0.3–12.2 | 8.0 (3.3) 3.5 (13.1) | 5.9 (1.7) 3.2–8.1 |
Dysfluency | 0.2 (0.1) 0–0.3 | 0.1 (0.1) 0–0.5 | 0.1 (0.1) 0–0.3 | 0.1 (0.1) 0–0.5 | 0.3 (0.2) 0–0.7 | 0.3 (0.2) 0.02–0.8 | 0.2 (0.2) 0.01–0.7 | 0.3 (0.2) 0.04–0.7 |