Table 1.
Group Differences in Demographics and Variables of Interest
| Anxious | Control | Total Sample | Comparison Statistics | |||
|---|---|---|---|---|---|---|
|
|
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| M (SD) / % (n) | M (SD) / % (n) | M (SD) / % (n) | t or X2 (df) | p | ||
| Age | 9.01 (1.70) | 8.92 (1.26) | 8.98 (1.56) | −.33 (95.77) | .75 | |
| Gender (Female) | 50.7% (38) | 52.6% (20) | 51.3% (58) | .04 (1) | .84 | |
| Race/Ethnicity | 3.00 (4) | .56 | ||||
| Caucasian | 54.7% (41) | 60.5% (23) | 56.6% (64) | |||
| African-American | 4% (3) | 5.3% (2) | 4.4% (5) | |||
| Asian | 1.3% (1) | 2.6% (1) | 1.8% (2) | |||
| Hispanic | 13.3% (10) | 18.4% (7) | 15% (17) | |||
| Other/Biracial | 26.7% (20) | 13.2% (5) | 22.1% (25) | |||
| Income | −1.58 (109) | .12 | ||||
| < $10K | N/A | 5.4% (2) | 1.8% (2) | |||
| $10–20K | 2.7% (2) | 2.6% (1) | 2.7% (3) | |||
| $20–40K | 8.1% (6) | 10.8% (4) | 9% (10) | |||
| $40–60K | 8.1% (6) | 5.4% (2) | 7.2% (8) | |||
| $60–80K | 10.8% (8) | 16.2% (6) | 12.6% (14) | |||
| $80–100K | 10.8% (8) | 16.2% (6) | 12.6% (14) | |||
| >$100K | 59.5% (44) | 43.2% (16) | 54.1% (60) | |||
| Maternal Education | −1.38 (110) | .17 | ||||
| Some grade school | 1.4% (1) | 2.6% (1) | 1.8% (2) | |||
| Completed high school | 1.4% (1) | 10.5% (4) | 4.5% (5) | |||
| Some College | 17.6% (13) | 10.5% (4) | 15.2% (17) | |||
| Completed College | 40.5% (30) | 47.4% (18) | 42.9% (48) | |||
| Advanced Degree | 39.2% (29) | 28.9% (11) | 35.7% (40) | |||
| Paternal Education | −.69 (4) | .50 | ||||
| Some grade school | 1.4% (1) | N/A | .9% (1) | |||
| Completed high school | 11% (8) | 5.6% (2) | 9.2% (10) | |||
| Some College | 17.8% (13) | 36.1% (13) | 23.9% (26) | |||
| Completed College | 34.2% (25) | 33.3% (12) | 33.9% (37) | |||
| Advanced Degree | 35.6% (26) | 25% (9) | 32% (35) | |||
| Parent Marital Status | 1.25 (1) | .26 | ||||
| Married | 81.3% (61) | 89.5% (34) | 84.1% (95) | |||
| Other (e.g., Single, Divorced) | 18.7% (14) | 10.5% (4) | 15.9% (18) | |||
| CGAS | 57.27 (6.01) | - | - | - | - | |
| SCARED-P | 31.22 (12.10) | 4.65 (3.80) | 22.70 (16.09) | −16.95 (94.82) | <.001 | |
| SCARED-C | 30.75 (14.07) | 15.19 (9.51) | 25.61 (14.67) | −6.81 (96.60) | <.001 | |
| Co-Sleeping | 8.35 (2) | .02 | ||||
| Usually | 22.7% (17) | 5.3% (2) | 16.8% (19) | |||
| Sometimes | 13.3% (10) | 5.3% (2) | 10.6% (12) | |||
| Rarely | 64% (48) | 89.5% (34) | 72.6% (82) | |||
| WEP | 17.12 (7.71) | 14.24 (8.24) | 16. 11 (7.98) | −1.81 (107) | .07 | |
| WASO (minutes) | 51.14 (26.95) | 44.38 (24.18) | 48.78 (26.11) | −1.29 (107) | .19 | |
| TST (minutes) | 499.92 (39.14) | 504.41 (44.28) | 501.49 (40.86) | .55 (107) | .59 | |
| Sleep Onset | 22:09 (1:04) | 22:02 (0:47) | 22:06 (0:59) | −.62 (107) | .54 | |
| Sleep Offset | 7:19 (0:50) | 7:10 (0:41) | 07:16 (0:47) | −.95 (107) | .35 | |
| TST SD (minutes) | 53.17 (25.98) | 45.15 (17.56) | 50.37 (23.62) | −1.69 (107) | .09 | |
| Sleep Onset SD (minutes) | 39.01 (24.65) | 38.72 (19.39) | 38.91 (22.86) | −.06 (107) | .95 | |
| Sleep Offset SD (minutes) | 42.46 (25.64) | 45.68 (19.13) | 43.58 (23.53) | .68 (107) | .50 | |
Notes. CGAS = Children's Global Assessment Scale. SCARED-P = Screen for Child Anxiety Related Disorders, Parent Report. SCARED-C = Screen for Child Anxiety Related Disorders, Child Report. WEP = Wake Episodes. WASO = Wake After Sleep Onset. TST = Total Sleep Time. TST SD = Standard Deviation of Total Sleep Time (Intraindividual Variability in Sleep Duration). Sleep Onset SD = Standard Deviation of Sleep Onset. Sleep Offset SD = Standard Deviation of Sleep Offset.