Baseline psychosocial sample characteristics by trial allocation
| Intervention (n=2018)* n (%) or mean (SD) | Control (n=2019)* n (%) or mean (SD) | |
|---|---|---|
| Site | ||
| Liverpool recruitment centre | 1003 (50) | 1016 (50) |
| Cambridgeshire recruitment centre | 1002 (50) | 1016 (50) |
| Age (years) | 67.72 (4.04) | 67.59 (4.13) |
| Gender | ||
| Male | 1520 (75) | 1500 (74) |
| Female | 498 (25) | 519 (26) |
| Education† | ||
| Up to GCSE/O level or equivalent | 678 (46) | 683 (46) |
| Beyond GCSE/O level or equivalent | 788 (54) | 791 (54) |
| Ethnicity | ||
| White | 1992 (99) | 1992 (99) |
| Non-white | 18 (1) | 19 (1) |
| Marital group | ||
| Married/cohabiting | 1483 (74) | 1471 (73) |
| Not married/cohabiting | 528 (26) | 545 (27) |
| IMD | ||
| Quintile 1 (most deprived) | 545 (27) | 533 (26) |
| Quintile 2 | 243 (12) | 242 (12) |
| Quintile 3 | 358 (18) | 361 (18) |
| Quintile 4 | 353 (18) | 376 (19) |
| Quintile 5 (least deprived) | 519 (26) | 507 (25) |
| Smoking status | ||
| Current smoker | 772 (38) | 787 (39) |
| Ex-smoker | 1244 (62) | 1232 (61) |
| Never smoker | 2 (<1) | 0 (0) |
| Experience of lung cancer (T0) | ||
| No | 1168 (58) | 1126 (56) |
| Yes | 846 (42) | 889 (44) |
| Cancer distress (T0)‡ | 2.17 (0.29) 8.75 | 2.17 (0.29) 8.74 |
| Anxiety (T0)‡ | 1.55 (0.71) 3.72 | 1.54 (0.71) 3.67 |
| Depression (T0)‡ | 1.30 (0.68) 2.66 | 1.28 (0.67) 2.61 |
| Decision satisfaction (T0) | ||
| Not very satisfied | 1228 (61) | 1158 (58) |
| Very satisfied | 786 (39) | 853 (42) |
*Ns vary in each cell due to missing data. Percentages were calculated based on available data.
†A substantial amount of data were missing or uninformative for education.
‡Logn scores are provided in normal text and original scale scores are provided in italics (analyses performed using logn scores).
GCSE, General Certificate of Secondary Education; IMD, Index of Multiple Deprivation.