Table 3.
Independent and dependent variables, CHAMACOS (N = 282).
| Independent variables | No. (%) | Mean (SD) | Range, N |
|---|---|---|---|
| Major life events (MLE) | |||
| Child began new school | 163 (58) | ||
| Family finances changed | 115 (41) | ||
| Close family member died | 65 (23) | ||
| Close family member hospitalized | 56 (20) | ||
| Brother or sister was born | 55 (20) | ||
| Another adult moved in | 51 (18) | ||
| Parent got new job and had to move away | 52 (18) | ||
| Brother or sister left home | 47 (16) | ||
| Parent had emotional problem | 34 (12) | ||
| Parents separated or divorced | 23 (8) | ||
| Parent in jail | 23 (8) | ||
| Family started fighting more | 15 (5) | ||
| Child hospitalized | 10 (4) | ||
| Child has visible deformity | 11 (4) | ||
| Family member was a victim of a crime | 6 (2) | ||
| MLE | 2.36 (1.7) | 0 to 9, 280 | |
| Respiratory sinus arrhythmia reactivity | −0.18 (0.5) | −1.48 to 1.55, 281 | |
| Preejection period reactivity | -0.27 (1.6) | −5.01 to 4.82, 282 | |
| Dependent variable | |||
| Sleep problems (somewhat true and very true) | |||
| Does not want to sleep alone | 201 (60) | ||
| Resists going to bed at night | 116 (35) | ||
| Has nightmares | 65 (20) | ||
| Talks or cries out in sleep | 67 (20) | ||
| Has trouble getting to sleep | 49 (15) | ||
| Wakes up often at night | 38 (11) | ||
| Sleeps less than most children during day and night | 27 (8) | ||
| Sleep problems | 2.01 (1.9) | 0 to 12, 282 | |