Table 7.
Item response theory (IRT) item parameters and standard error estimates (using IRTPRO) for the Feeling Tone Questionnaire 13 and 9 positive affect item sets for the total sample (n = 6756)
| Item Description | 13 item set | Positive items set | ||||
|---|---|---|---|---|---|---|
| a (s.e. of a) | b1 (s.e.) | b2 (s.e.) | a (s.e. of a) | b1 (s.e.) | b2 (s.e.) | |
| Are you feeling well? | 1.50 (0.04) | −1.44 (0.04) | −0.06 (0.02) | 1.49 (0.04) | −1.45 (0.04) | −0.06 (0.02) |
| Do you like being here? | 1.50 (0.04) | −1.30 (0.03) | −0.09 (0.02) | 1.43 (0.04) | −1.34 (0.04) | −0.09 (0.02) |
| Are you feeling happy today? | 1.84 (0.05) | −1.21 (0.03) | −0.02 (0.02) | 1.75 (0.05) | −1.25 (0.03) | −0.02 (0.02) |
| Do you have any pain? | Item excluded | |||||
| Are you feeling bored? | 0.68 (0.03) | −2.53 (0.12) | −1.29 (0.07) | |||
| Are people helpful here? | 1.91 (0.06) | −1.91 (0.04) | −0.30 (0.02) | 1.93 (0.06) | −1.91 (0.04) | −0.30 (0.02) |
| Do you feel lonely? | 0.50 (0.03) | −2.49 (0.14) | −0.56 (0.06) | |||
| Is there anything that stops you from doing what you want to do? | Item excluded | |||||
| Do you have a good appetite? | 1.63 (0.05) | −1.61 (0.04) | −0.14 (0.02) | 1.67 (0.05) | −1.60 (0.04) | −0.14 (0.02) |
| Do you like the people here? | 1.99 (0.06) | −2.24 (0.05) | −0.34 (0.02) | 2.04 (0.06) | −2.23 (0.05) | −0.34 (0.02) |
| Is anybody nasty to you? | 0.74 (0.04) | −3.14 (0.16) | −2.02 (0.10) | |||
| Do you sleep well? | 1.37 (0.04) | −1.51 (0.04) | 0.02 (0.02) | 1.34 (0.04) | −1.53 (0.04) | 0.02 (0.02) |
| Did you have a nice day yesterday? | 2.30 (0.07) | −1.60 (0.03) | −0.20 (0.02) | 2.26 (0.06) | −1.63 (0.03) | −0.20 (0.02) |
| Did anything upset you yesterday? | 0.79 (0.04) | −3.20 (0.16) | −2.10 (0.10) | |||
| Do you have any trouble with your health? | Item excluded | |||||
| Do you feel good about tomorrow? | 1.43 (0.04) | −2.01 (0.05) | −0.04 (0.02) | 1.43 (0.04) | −2.02 (0.05) | −0.04 (0.02) |