Variable | N | Spearman’s rank correlations (rs) | P values |
Global HCTD score* | 141 | 0.58 | <0.0001 |
Self-reported disease burden score† | 1443 | 0.42 | <0.0001 |
Number of self-reported conditions‡ | 1523 | 0.31 | <0.0001 |
Quality of life score§ | 1520 | −0.36 | <0.0001 |
Self-rated health¶ | 1503 | −0.36 | <0.0001 |
*Calculation of global HCTD score: sum of scores where each question was scored 0 (no difficulty), 1 (some difficulty) or 2 (a lot of difficulty). Minimum score 0, maximum score 16. Missing data were scored 0 (not difficult), as suggested by the HCTD authors.6
†Sum of the weighted scores (each scored 1–5) from the Bayliss scale.12 Responses were excluded if participants ticked that they had a condition but did not score how much the condition limited their daily activity, or if they gave a score without ticking that they had the condition.
‡Number of self-reported conditions from the Bayliss scale.
§EuroQol five dimensions, five level questionnaire (EQ-5D-5L) score.11
¶Single question: ‘In general, would you say your health is poor (1), fair (2), good (3), very good (4) or excellent (5)?’
HCTD, Healthcare Task Difficulty; MTBQ, Multimorbidity Treatment Burden Questionnaire.