Table 2.

Meta-regression analyses^a.

Outcome and predictor			N comp b		Slope		Z		P value
Depression
	Study quality	88		0.05		1.09		.28
	N sessions	84		0		0		.99
	Mean age	80		0		0.47		.64
	% female	87		0.01		1.37		.18
Anxiety
	Study quality	73		0.07		2.04		.04c
	N sessions	69		0		–1.25		.21
	Mean age	66		0		–0.03		.98
	% female	73		0		0.83		.40
Stress
	Study quality	55		–0.04		–0.74		.46
	N sessions	49		0.03		2.45		.05
	Mean age	43		0.01		2.88		.004d
	% female	55		0		0.25		.80
Well-being
	Study quality	51		0.07		0.90		.37
	N sessions	49		0		–0.33		.74
	Mean age	51		0		–0.28		.78
	% female	51		0		0.17		.86
Mindfulness
	Study quality	71		0.01		0.26		.80
	N sessions	66		–0.01		–2.80		.005d
	Mean age	65		0		0.06		.95
	% female	71		0.01		1.83		.07

^aMeta-regression analyses were conducted using a mixed effects model with unrestricted maximum likelihood.

^bN_comp: number of comparisons.

^cP<.05.

^dP<.01.