Formal mindfulness practice predicts reductions in PTSD symptom severity following a mindfulness-based intervention for women with co-occurring PTSD and substance use disorder

Table 2 Means, standard deviations, and correlation coefficients of study variables at baseline, postcourse and 6-month follow-up

Variable	Baseline		Postcourse		6 m Follow-up		Correlations
Variable	M	SD	M	SD	M	SD	1	2	3	4
1. Formal practice minutes	–	–	203.37	155.06	–	–	–
2. Informal practice frequency	–	–	33.48	27.11	–	–	.147	–
3. PTSD symptoms	47.39	11.81	29.61	12.57	31.08	17.20	− .469*	− .017	–
4. Craving	22.30	7.84	9.42	7.84	6.95	6.24	− .394	.192	.496*	–

^*p < .05, two tailed. Bivariate correlations of average formal practice minutes, average informal practice duration, 6-month PTSD symptom severity, and 6-month craving are displayed

ISSN: 1940-0640