Table 4.
Item Response Theory Item Parameters for the 42-Item PROMIS Pediatric Life Satisfaction Item Bank, Child Self-Report Edition, and Short Form Item Assignment.
| Item stem | Short Forms | Item Discrimination | Item Thresholds | |||
|---|---|---|---|---|---|---|
| b1 | b2 | b3 | b4 | |||
| My life was ideal. | 3.33 | −2.07 | −1.42 | −0.64 | 0.20 | |
| My life was the best. | SF8a | 3.71 | −1.97 | −1.38 | −0.64 | 0.30 |
| My life was outstanding. | SF8a | 3.83 | −1.82 | −1.29 | −0.60 | 0.21 |
| My life was excellent. | 3.28 | −2.21 | −1.49 | −0.79 | 0.11 | |
| My life was great. | SF8a | 5.34 | −2.02 | −1.45 | −0.80 | −0.04 |
| My life was good. | 4.64 | −2.32 | −1.76 | −1.03 | −0.13 | |
| My life was going very well. | 5.44 | −2.21 | −1.54 | −0.95 | −0.06 | |
| My life was just right. | 3.35 | −2.01 | −1.49 | −0.78 | 0.11 | |
| The conditions of my life were excellent. | 4.01 | −1.94 | −1.44 | −0.75 | 0.09 | |
| My life situation was excellent. | 2.70 | −2.52 | −1.76 | −0.85 | 0.20 | |
| I was happy with the way things were. | 3.29 | −2.23 | −1.54 | −0.86 | 0.12 | |
| I had what I wanted in life. | SF4a, SF8a, SF8b | 2.52 | −2.27 | −1.49 | −0.61 | 0.45 |
| I had what I needed in life. | 2.05 | −2.92 | −2.04 | −1.12 | −0.03 | |
| I got the things I wanted in life. | 2.29 | −2.51 | −1.59 | −0.68 | 0.46 | |
| My life was better than most kids’ lives. | 1.88 | −2.30 | −1.44 | −0.50 | 0.56 | |
| I enjoyed my life more than most kids enjoyed their lives. | 2.26 | −2.35 | −1.57 | −0.66 | 0.35 | |
| I lived as well as other kids. | 2.76 | −2.39 | −1.75 | −0.92 | 0.10 | |
| My life was as good as most kids’ lives. | 1.98 | −2.56 | −1.80 | −0.92 | 0.17 | |
| I was satisfied with the friends I have. | SF8b | 1.34 | −3.51 | −2.49 | −1.60 | −0.37 |
| I was happy with my social life. | 1.85 | −2.79 | −1.96 | −1.06 | 0.06 | |
| I was happy with my family life. | SF8b | 2.97 | −2.34 | −1.68 | −1.10 | −0.28 |
| I was happy with my life at school. | 1.98 | −2.46 | −1.61 | −0.84 | 0.18 | |
| I was happy with my life at home. | 2.90 | −2.42 | −1.71 | −1.03 | −0.17 | |
| I was happy with my life in my neighborhood. | SF8b | 1.73 | −2.82 | −1.96 | −0.97 | 0.03 |
| I was happy with my life in my community. | 2.56 | −2.60 | −1.75 | −0.87 | 0.11 | |
| I was satisfied with my free time. | 2.02 | −2.50 | −1.85 | −1.06 | −0.09 | |
| I was satisfied with my skills and talents. | SF8b | 1.88 | −2.82 | −1.93 | −1.08 | −0.09 |
| I was satisfied with my life. | SF4a, SF8a, SF8b | 3.87 | −2.39 | −1.80 | −1.03 | −0.11 |
| I felt extremely positive about my life. | 3.78 | −2.07 | −1.41 | −0.72 | 0.10 | |
| I was happy with my life. | SF4a, SF8a, SF8b | 5.34 | −2.27 | −1.65 | −1.03 | −0.21 |
| I felt very good about my life. | 5.47 | −2.29 | −1.62 | −0.95 | −0.13 | |
| I felt good about my life. | 4.14 | −2.47 | −1.64 | −0.98 | −0.08 | |
| I had a good life. | SF4a, SF8a, SF8b | 4.91 | −2.48 | −1.80 | −1.11 | −0.24 |
| I felt positive about my life. | 4.10 | −2.37 | −1.65 | −0.97 | −0.05 | |
| I had fun. | 3.29 | −2.62 | −1.90 | −1.20 | −0.31 | |
| I had a lot of fun. | 2.96 | −2.60 | −1.90 | −1.17 | −0.27 | |
| I enjoyed my life. | SF8a | 4.99 | −2.33 | −1.67 | −1.07 | −0.25 |
| I liked the way I lived my life. | 3.44 | −2.44 | −1.75 | −0.98 | −0.03 | |
| My life was worthwhile. | 2.67 | −2.65 | −1.86 | −1.14 | −0.22 | |
| My life went well. | 4.88 | −2.43 | −1.75 | −1.00 | −0.10 | |
| I lived my life well. | 2.83 | −2.68 | −1.97 | −1.02 | −0.03 | |
| I was satisfied with my life in general. | 3.86 | −2.31 | −1.73 | −1.05 | −0.20 | |
Note: SF4a: 4-item life satisfaction short form; SF8a: 8-item life satisfaction short form that includes the 4-item form and 4 additional global life satisfaction items; and, SF8b: 8-item life satisfaction short form that includes the 4-item form and 4 additional context-specific life satisfaction items.