Table 2.

Descriptive statistics for all modelled variables for participants in the customization versus non-customization conditions divided by level of need for autonomy (N = 203).

	Customization condition		Non-customization condition
	Lesser need for autonomy	Greater need for autonomy	Lesser need for autonomy	Greater need for autonomy	F	p	eta2
Perceived active control	5.38 (0.99)	5.48 (0.82)	5.51 (0.81)	5.51 (0.97)	0.21	.651	.001
Autonomous motivation	4.92 (1.34)	5.06 (1.28)	5.13 (1.00)	4.76 (1.54)	2.00	.159	.010
Intention to engage in PA	4.50 (1.62)	5.66 (1.66)***	4.89 (1.39)	5.19 (1.42)	4.06	.045	.020

Note: Means (with standard deviations within parentheses) and F-statistics are presented for the 2 (customization: present vs. absent) × 2 (need for autonomy: lesser vs. greater) design. Mean scores within the customization condition significantly differ between those with a greater and lesser need for autonomy. All dependent variables were measured on a 7-point scale with higher scores indicating higher perceived active control over the health app, autonomous motivation to use health apps, and intention to engage in physical activity. Eta-squared indicates the effect size of the interaction between condition and need for autonomy using the following designations: .10 = small, .25 = medium, .40 = large.

PA = physical activity.

***p < .001.