Response Level | Q1 | Q2 | Q3 | Q4 | Q5 | Q6 | Q7 | Q8 | Q9 | Q10 | Q11 | Q12 |
|---|
0 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 |
1 | 0.582 | 0.021 | 0.462 | 0.000 | 0.000 | 0.449 | 0.000 | 0.704 | 0.000 | 0.422 | 0.733 | 0.698 |
2 | 1.493 | 0.021 | 0.880 | 0.745 | 0.653 | 1.091 | 0.000 | 0.704 | 1.423 | 1.072 | 1.099 | 0.852 |
3 | 1.493 | 0.206 | 0.880 | 0.745 | 1.187 | 1.268 | 1.009 | 1.492 | 1.423 | 1.727 | 1.632 | 1.695 |
4 | 2.079 | 1.143 | 2.199 | 1.421 | 1.720 | 1.509 | 1.446 | 1.657 | 1.423 | 1.727 | 1.710 | 2.141 |
5 | 2.354 | 1.356 | 2.333 | 2.324 | 1.890 | 2.302 | 1.206 | 1.749 | 1.423 | 2.110 | 1.926 | 2.789 |
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Short Item Key: 1 Q1 - Draining ear; Q2 - Smelly ear; Q3 - Hearing at home; Q4 - Hearing in noise; Q5 - Discomfort/pain; Q6 – Dizziness; Q7 – Tinnitus; Q8 - Activity restriction; Q9 – Need to limit exposure to water; Q10 - GP visits; Q11 - Taking medicines; Q12 - Overall QoL impact of hearing problems
- Entries are the adopted item response values for the 5 levels for each of the 12 questions when regressing them against a preliminary total score. Here that dependent variable was the total 1st PC total (out of 5 X 12 = 60, unscaled, but scored continuously as integers), for the average of 1st two visits so in effect a grain of 1/120 in the dependent variable. The exemplified independent variable category means estimated are the set from visit. The 12 scaling regressions shown in Table 2 are done individually for the chosen dataset eg Visit 1, 2 combined), taking the responses of 0–5 as category labels for their means in the raw total to be estimated from data by regression mapping, not as integer arithmetical values
