Table 2

Attrition at long-term follow-up: comparison of T2 completers and non-completers

T2 completers (n=2855)*
n (%) or mean (SD)		T2 non-completers (n=1026)*
n (%) or mean (SD)		Test statistic
(p value)
Trial allocation
 Intervention1553 (54)335 (33)<0.001
 Control1302 (46)691 (67)
Site
 Liverpool recruitment centre1336 (47)622 (61)<0.001
 Cambridge recruitment centre1519 (53)404 (39)
Age (years)67.79 (3.98)67.19 (4.31)<0.001
Gender
 Male2166 (76)736 (72)<0.01
 Female689 (24)290 (28)
Education†
 Up to GCSE/O level940 (44)367 (53)<0.001
 Beyond GCSE/O level1196 (56)330 (47)
Ethnicity
 White2825 (99)1004 (99)‡
 Non-white21 (1)15 (1)
Marital group
 Married/cohabiting2174 (76)672 (66)<0.001
 Not married/cohabiting675 (24)352 (34)
IMD
 Quintile 1 (most deprived)668 (23)373 (36)<0.001
 Quintile 2338 (12)126 (12)
 Quintile 3523 (18)170 (17)
 Quintile 4545 (19)157 (15)
 Quintile 5 (least deprived)781 (27)200 (19)
Smoking status
 Current smoker1009 (35)490 (48)<0.001
 Ex-smoker1845 (65)536 (52)
 Never smoker1 (<1)0 (0)‡
Experience of lung cancer (T0)
 No1683 (59)522 (51)<0.001
 Yes1166 (41)503 (49)
Cancer distress (T0)§2.16 (0.28)
8.64		2.20 (0.32)
9.06		<0.001
Anxiety (T0)§1.51 (0.71)
3.52		1.64 (0.71)
4.17		<0.001
Depression (T0)§1.25 (0.66)
2.51		1.38 (0.68)
2.96		<0.001
Decision satisfaction (T0)
 Not very satisfied1668 (59)612 (60)<0.47
 Very satisfied1179 (41)410 (40)

  • *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.

  • ‡Data were excluded from analysis due to limited variation.

  • §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.