Abbreviations		
T1 = Assessment before course start		
T2 = Assessment directly after course end		
T3 = Follow-up assessment six months after course end
ReST = Restoration skills training, a five-week mindfulness-based training course adapted to be given in and draw on a natural setting rich in restorative qualities		
CMT = Conventional mindfulness training, a five-week mindfulness-based training course given indoors and using conventional mindfulness exercises		
FFMQ = Five Facet Mindfulness Questionnaire, 29 item version (see Baer et al. (2006). Using self-report assessment methods to explore facets of mindfulness. Assessment, 13(1); Lilja et al. (2011). Five Facets Mindfulness QuestionnaireReliability and factor structure: A Swedish version. Cognitive Behaviour Therapy, 40(4))"		
CFQ = Cognitive Failures Questionnaire (see Broadbent et al. (1982). The Cognitive Failures Questionnaire (CFQ) and its correlates. British Journal of Clinical Psychology, 21(1))		
PSS = Perceived Stress Scale (Cohen et al. (1983). A global measure of perceived stress. Journal of Health and Social Behavior, 24(4))		
RCI = Reliable change index (calculated as per Jacobson & Truax (1991). Clinical significance: A statistical approach to defining meaningful change in psychotherapy research. Journal of Consulting and Clinical Psychology, 59(1); Wise (2004). Methods for analyzing psychotherapy outcomes: A review of clinical significance, reliable change, and recommendations for future directions. Journal of Personality Assessment, 82(1)"		
		
Study description		
"The following is the abstract from Lymeus, F., White, M.P., Lindberg, P., & Hartig, T. (under review). Restoration skills training (ReST) is a mindfulness-based course in which participants draw support from a natural practice setting while they learn to meditate. Well-established conventional mindfulness training (CMT) can improve psychological functioning but many perceive it as demanding and fail to sustain practice habits. Applying non-inferiority logic, previous research indicated that ReST overcomes compliance problems without compromising the benefits gained over 5 weeks training. This article applies similar logic in a 6-month follow-up. Of 97 contacted ReST and CMT course completers, 68 responded and 29 were included with multiple imputation data. The online survey included questions about their psychological functioning in three domains (dispositional mindfulness, cognitive lapses, perceived stress) and the forms and frequencies with which they had continued to practice mindfulness after the course. Former ReST participants continued, on average, to show higher dispositional mindfulness and fewer cognitive lapses compared to pre-course ratings. Improved psychological functioning in one or more domains was demonstrated by 35%, as determined by a reliable change index. Again, non-inferiority analyses detected no indications of any substantive disadvantages compared to the more demanding, established CMT approach. Compared to the CMT group, more ReST participants had also continued to practice at least occasionally (92% versus 67%). Continued practice was linked to sustained improvements for ReST but not clearly so for CMT. ReST participants thus continued to use the skills and sustained the improvements in psychological functioning that they had gained in the course, further supporting the utility of ReST as a health intervention."		
		
		
Variable name	Variable description	Values
Identifier	Anonymization code	Position 1 = Round, Positions 2 - 3 = participant ID
imputation_number	Multiple imputation number	0 = original data, 1-30 = multiple imputation data sets
Round	Data collection round 2 - 4	None
Course_type	ReST, CMT	{0, CMT; 1, ReST}
T2_posttest	Completed valid T2 posttest	{0, Absent or invalid T2 posttest data; 1, Valid T2 posttest data}
T3_followup	Completed valid T3 follow-up	{,00, Absent or invalid T3 follow-up data; 1, Valid T3 follow-up data}
Gender	Female vs Male	{0, man; 1, woman}
Age	Age in years at enrollmemt	
T1_FFMQ_Average	Before course, Five Facet Mindfulness Questionnaire, average rating	
T1_CFQ_Average	Before course, Cognitive Failures Questionnaire, average rating	
T1_PSS_Average	Before course, Perceived Stress Scale, average rating	
Homepractice_intercept	Intercept from simple least squares regression of weekly homework practice completion reports obtained over the five-week course	
Homepractice_regslope	Regression slope from simple least squares regression of weekly homework practice completion reports obtained over the five-week course	
T1_T2_FFMQ_Average	Change from T1 to T2, Five Facet Mindfulness Questionnaire (T2_FFMQ_Average - T1_FFMQ_Average)	
T1_T2_FFMQ_RCI	Change from T1 to T2, Five Facet Mindfulness Questionnaire, Reliable change index classification (change greater than T1 +/- 0.65 average item rating)	{-1, T1_T2_FFMQ_change < 0.65; 0, T1_T2_FFMQ_change < 0.65, > -0.65; 1, T1_T2_FFMQ_change > 0.65}
T1_T2_CFQ_Average	Change from T1 to T2, Cognitive Failures Questionnaire (T2_CFQ_Average - T1_CFQ_Average)	
T1_T2_CFQ_RCI	Change from T1 to T2, Cognitive Failures Questionnaire, Reliable change index classification (change greater than T1 +/- 0.54 average item rating)	{-1, T1_T2_CFQ_change > 0.54; 0, T1_T2_CFQ_change < 0.54, > -0.54; 1, T1_T2_CFQ_change < -0.54}
T1_T2_PSS_Average	Change from T1 to T2, Perceived Stress Scale (T2_PSS_Average - T1_PSS_Average)	None
T1_T2_PSS_RCI	Change from T1 to T2, Perceived Stress Scale, Reliable change index classification (change greater than T1 +/- 0.72 average item rating)	{-1, T1_T2_PSS_change > 0.72; 0, T1_T2_PSS_change < 0.72, > -0.72; 1, T1_T2_PSS_change <  -0.72}
T1_T2_RCI_Composite_Improved	Composite of T1_T2_FFMQ_RCI, T1_T2_CFQ_RCI and T1_T2_PSS_RCI, classifying participants as improved vs unchanged or deteriorated	{1, T1_T2_FFMQ_change OR T1_T2_CFQ_change OR T1_T2_PSS_change = 1 AND neither of them = -1}
T1_T2_RCI_Composite_Deteriorated	Composite of T1_T2_FFMQ_RCI, T1_T2_CFQ_RCI and T1_T2_PSS_RCI, classifying participants as deteriorated vs unchanged or improved	{1, T1_T2_FFMQ_change OR T1_T2_CFQ_change OR T1_T2_PSS_change = -1}
T3_Contpractice_Formal_Rawsum	Ordinal response to how often since the course ended participants completed formal meditation exercises	{0, Never; 1, Just the odd occasion; 2, Several times; 3, At least once per month; 4, At least once per week; 5, On most days; 6, Practically every day}
T3_Contpractice_Formal_Occasional	Classification based on T3_Contpractice_Formal_Rawsum: At least occasional practice (2 or higher) vs having abandoned practice (1, 0)	{0, Abandoned practice; 1, Continued to practice at least occasionally}
T3_Contpractice_Formal_Regular	Classification based on T3_Contpractice_Formal_Rawsum: Regular practice (4 or higher) vs no regular practice (0-3)	{0, Not continued regular practice; 1, Continued to practice regularly}
T3_Contpractice_Informal_Rawsum	Ordinal response to how often since the course ended participants completed informal meditation exercises	{0, Never; 1, Just the odd occasion; 2, Several times; 3, At least once per month; 4, At least once per week; 5, On most days; 6, Practically every day}
T3_Contpractice_Informal_Occasional	Classification based on T3_Contpractice_Informal_Rawsum: At least occasional practice (2 or higher) vs having abandoned practice (1, 0)	{0, Abandoned practice; 1, Continued to practice at least occasionally}
T3_Contpractice_Informal_Regular	Classification based on T3_Contpractice_Informal_Rawsum: Regular practice (4 or higher) vs no regular practice (0-3)	{0, Not continued regular practice; 1, Continued to practice regularly}
T3_Contpractice_Dailyuse_Rawsum	Ordinal response to how often since the course ended participants used mindfulness skills in daily life situations	{0, Never; 1, Just the odd occasion; 2, Several times; 3, At least once per month; 4, At least once per week; 5, On most days; 6, Practically every day}
T3_Contpractice_Dailyuse_Occasional	Classification based on T3_Contpractice_Dailyuse_Rawsum: At least occasional practice (2 or higher) vs having abandoned practice (1, 0)	{0, Abandoned practice; 1, Continued to practice at least occasionally}
T3_Contpractice_Dailyuse_Regular	Classification based on T3_Contpractice_Dailyuse_Rawsum: Regular practice (4 or higher) vs no regular practice (0-3)	{0, Not continued regular practice; 1, Continued to practice regularly}
T3_Contpractice_Any_Occasional	Composite of T3_Contpractice_Formal_Occasional, T3_Contpractice_Informal_Occasional and T3_Contpractice_Dailyuse_Occasional	{0, Abandoned practice; 1, Continued to practice at least occasionally in any form}
T3_Contpractice_Any_Regular	Composite of T3_Contpractice_Formal_Regular, T3_Contpractice_Informal_Regular and T3_Contpractice_Dailyuse_Regular	{0, Not continued regular practice; 1, Continued to practice regularly in any form}
T3_FFMQ_Average	6-month follow-up, Five Facet Mindfulness Questionnaire, average rating	
T3_CFQ_Average	6-month follow-up, Cognitive Failures Questionnaire, average rating	
T3_PSS_Average	6-month follow-up, Perceived Stress Scale, average rating	
T1_T3_FFMQ_Average	Change from T1 to T3, Five Facet Mindfulness Questionnaire (T3_FFMQ_Average - T1_FFMQ_Average)	
T1_T3_FFMQ_RCI	Change from T1 to T3, Five Facet Mindfulness Questionnaire, Reliable change index classification (change greater than T1 +/- 0.65 average item rating)	{-1, T1_T3_FFMQ_change < 0.65; 0, T1_T3_FFMQ_change < 0.65, > -0.65; 1, T1_T3_FFMQ_change > 0.65}
T1_T3_CFQ_Average	Change from T1 to T3, Cognitive Failures Questionnaire (T3_CFQ_Average - T1_CFQ_Average)	
T1_T3_CFQ_RCI	Change from T1 to T3, Cognitive Failures Questionnaire, Reliable change index classification (change greater than T1 +/- 0.54 average item rating)	{-1, T1_T3_CFQ_change > 0.54; 0, T1_T3_CFQ_change < 0.54, > -0.54; 1, T1_T3_CFQ_change < -0.54}
T1_T3_PSS_Average	Change from T1 to T3, Perceived Stress Scale (T3_PSS_Average - T1_PSS_Average)	
T1_T3_PSS_RCI	Change from T1 to T3, Perceived Stress Scale, Reliable change index classification (change greater than T1 +/- 0.72 average item rating)	{-1, T1_T3_PSS_change > 0.72; 0, T1_T3_PSS_change < 0.72, > -0.72; 1, T1_T3_PSS_change <  -0.72}
T1_T3_RCI_Composite_Improved	Composite of T1_T3_FFMQ_RCI, T1_T3_CFQ_RCI and T1_T3_PSS_RCI, classifying participants as improved vs unchanged or deteriorated	{1, T1_T3_FFMQ_change OR T1_T3_CFQ_change OR T1_T3_PSS_change = 1 AND neither of them = -1}
T1_T3_RCI_Composite_Deteriorated	Composite of T1_T3_FFMQ_RCI, T1_T3_CFQ_RCI and T1_T3_PSS_RCI, classifying participants as deteriorated vs unchanged or improved	{1, T1_T3_FFMQ_change OR T1_T3_CFQ_change OR T1_T3_PSS_change = -1}
