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Table 3 Results of multiple regression for loss to follow up

From: Factors related to dropout in integrative oncology clinical trials: interim analysis of an ongoing comparative effectiveness trial of mindfulness-based cancer recovery and Tai chi/Qigong for cancer health (The MATCH study)

Steps

LTFU post-randomization

LTFU post-intervention

LTFU 6 month FU

Program type

 MBCR

1.39 (0.74–2.58); p = 0.30

1.04 (0.58–1.88); p = 0.89

1.04 (0.55–1.95); p = 0.91

 TCQ (ref)

1

1

1

 

R2 0.007

R2 0.000

R2 0.000

Program type

 MBCR

 

1.10 (0.60–2.03); p = 0.74

1.13 (0.59–2.18), p = 0.71

 TCQ (ref)

 

1

1

 

N/Aa

  

Employment

 Unemployed/disabled

 

1

1

 Retired

 

1.58 (0.55–4.49); p = 0.39

2.92 (0.86–9.92); p  = 0.09

 Employed (PT/FT)

 

2.22 (0.82–6.04); p  = 0.12

4.30 (1.32–13.98); p  = 0.02

Education

  

0.95 (0.88–1.02); p  = 0.15

 

R2 0.021

R2 0.074

Program type

 MBCR

1.40 (0.73–2.67); p  = 0.31

1.11 (0.60–2.03); p  = 0.74

1.10 (0.57–2.13); p  = 0.77

 TCQ (ref)

1

1

1

Employment

 

1

1

 Employed (PT/FT)

 

1.47 (0.51–4.26); p = 0.47

2.84 (0.83–9.68); p = 0.09

 Unemployed/disabled

 

2.14 (0.78–5.91); p  = 0.14

4.21 (1.29–13.73); p  = 0.02

 Retired

  

0.94 (0.88–1.01); p  = 0.95

Education

  

1

   

1.57 (0.77–3.19); p  = 0.26

Program timing

1

1

1

 IM (ref)

3.96 (2.08–7.56); p < 0.005

2.23 (1.19–4.14); p = 0.012

0.48 (0.20–1.14); p  = 0.09

 WL

   
 

R2 0.112

R2 0.065

R2 0.106

Program type

 MBCR

 

1.11 (0.56–2.16); p  = 0.77

1.24 (0.62–2.51)

 TCQ (ref)

 

1

1

Employment

 Employed (PT/FT)

 

1

1

 Unemployed/disabled

 

2.15 (0.67–6.93); p  = 0.19

(3.65.97–13.73); p  = 0.05

 Retired

 

3.21 (1.05–9.81); p = 0.04

5.33 (1.47–19.29); p  = 0.01

Education

  

0.95 (0.88–1.03); p  = 0.19

Program timing

 IM (ref)

 

1

1

 WL

 

1.37 (0.67–2.78); p = 0.39

1.02 (0.46–2.28); p = 0.95

Adherence

   

 LL (CA = low, HPL = low)

 

5.87 (2.57–13.40); p < 0.005

3.93 (1.53–10.02); p = 0.04

 LH (CA = low, HPL = high)

 

8.15 (2.41–27.58); p = 0.001

5.02 (1.26–19.96); p = 0.02

 HL (CA = high, HPL = low)

 

0.99 (0.39–2.52); p  = 0.99

1.37 (0.57–3.27); p  = 0.48

 HH (CA = high, HPL = high) (ref)

 

1

1

  

R2 0.251

R2 0.192

  1. The program start timing (i.e. whether the participants were in IM or WLC) was associated with LTFU at all the three time points
  2. aN/A: Not applicable