Average inter-item, corrected item-own scale, and item-other scale correlations* of the TAPQOL scales in 410 children: 92 infants aged 2–12 months and 318 toddlers aged 12–48 months
| TAPQOL scales | Population | Average inter-item correlation | Average item-own scale correlation* | Average item-other scale correlation |
|---|---|---|---|---|
| *Each item was correlated with the applicable scale excluding the item under consideration from the scale score. | ||||
| †Only for children aged 18 months or older (n = 264). | ||||
| NA, not applicable. | ||||
| Sleeping | Total | 0.67 | 0.76 | –0.16 |
| Infants | 0.66 | 0.75 | –0.22 | |
| Toddlers | 0.67 | 0.76 | –0.15 | |
| Appetite | Total | 0.55 | 0.63 | –0.10 |
| Infants | 0.44 | 0.52 | –0.17 | |
| Toddlers | 0.54 | 0.62 | –0.09 | |
| Lung problems | Total | 0.58 | 0.67 | –0.10 |
| Infants | 0.56 | 0.64 | –0.15 | |
| Toddlers | 0.59 | 0.68 | –0.10 | |
| Stomach problems | Total | 0.22 | 0.30 | –0.09 |
| Infants | 0.22 | 0.29 | –0.16 | |
| Toddlers | 0.25 | 0.36 | –0.09 | |
| Skin problems | Total | 0.53 | 0.61 | –0.05 |
| Infants | 0.48 | 0.55 | –0.08 | |
| Toddlers | 0.55 | 0.62 | –0.05 | |
| Motor functioning | Total | 0.67 | 0.76 | –0.10 |
| Infants | NA | NA | NA | |
| Toddlers† | 0.67 | 0.76 | –0.10 | |
| Problem behaviour | Total | 0.38 | 0.55 | –0.11 |
| Infants | 0.27 | 0.45 | –0.15 | |
| Toddlers | 0.33 | 0.50 | –0.10 | |
| Social functioning | Total | 0.44 | 0.52 | 0.07 |
| Infants | NA | NA | NA | |
| Toddlers† | 0.44 | 0.52 | 0.07 | |
| Communication | Total | 0.51 | 0.63 | –0.09 |
| Infants | NA | NA | NA | |
| Toddlers† | 0.51 | 0.63 | –0.09 | |
| Positive mood | Total | 0.79 | 0.84 | 0.15 |
| Infants | 0.93 | 0.94 | 0.23 | |
| Toddlers | 0.76 | 0.81 | 0.14 | |
| Anxiety | Total | 0.35 | 0.43 | –0.10 |
| Infants | 0.29 | 0.37 | –0.11 | |
| Toddlers | 0.36 | 0.44 | –0.09 | |
| Liveliness | Total | 0.57 | 0.63 | 0.05 |
| Infants | 0.33 | 0.41 | 0.05 | |
| Toddlers | 0.64 | 0.70 | 0.05 | |