Table 2.
Group Differences in Media Exposure at 6 Months
| Mean (SD) |
Test of Null Hypothesis of All Groups Equal (ANOVA) |
Test of Contrast Between VIP and Mean of BB and Control (Scheffe Test) |
|||||
|---|---|---|---|---|---|---|---|
| Variable | VIP (n=126) | BB (n = 147)a | Control (n=134) | F | P Value | t | P Value |
| Total daily duration of media, min/d | 131.6 (118.7) | 151.2 (116.7) | 155.4 (138.7) | 3.43 | .03 | 2.62 | .009 |
| By content, min/d | |||||||
| Educational | 20.9 (38.6) | 27.3 (44.6) | 25.4 (40.1) | 0.34 | .71 | NA | NA |
| Noneducational | 7.9 (21.1) | 10.8 (27.9) | 8.7 (24.0) | 0.12 | .89 | NA | NA |
| Older child/adult | 72.7 (82.0) | 77.6 (84.6) | 70.0 (79.3) | 0.13 | .88 | NA | NA |
| Unknown | 30.2 (77.5) | 35.5 (69.3) | 52.4 (108.1) | 2.5 | .08 | 2.2 | .03 |
| Program on for child, min/d | 48.7 (82.5) | 63.2 (86.1) | 64.1 (84.9) | 3.18 | .04 | 2.48 | .006 |
| Age first exposed to TV or videos, mo | 4.0 (1.7) | 3.5 (1.7) | 3.5 (1.5) | 3.81 | .02 | 2.76 | .01 |
Abbreviations: ANOVA, analysis of variance; BB, Building Blocks (intervention); NA, not applicable; TV, television; VIP Video Interaction Project (intervention).
a
Three BB families receiving follow up at 6 months missed assessment of media exposure.