TABLE 2.

Descriptive statistics (M, SD, n) of all variables at times T1, T2, T3, and T4 based on the final sample.

		Reliability	App group		Waitlist control
		α	n	M (SD)	n	M (SD)
Number of sessions completed			210	11.06 (7.34) Range: 1–28	322	0
Number of nights tracked			210	3.61 (6.11) Range: 0–25	322	0
General stress (4 items, scale range: 1–5)	T1	0.84	199	3.00 (0.76)	299	3.01 (0.73)
	T2	0.89	154	2.63 (0.77)	274	2.89 (0.77)
	T3	0.89	117	2.53 (0.82)	241	2.79 (0.81)
	T4	0.90	111	2.46 (0.80)	225	2.57 (0.81)
Cognitive stress (4 items, scale range: 1–5)	T1	0.83	199	2.59 (0.85)	297	2.63 (0.78)
	T2	0.87	154	2.36 (0.82)	274	2.50 (0.80)
	T3	0.88	117	2.25 (0.85)	241	2.48 (0.80)
	T4	0.90	111	2.17 (0.85)	227	2.34 (0.81)
Wellbeing (7 items, scale range: 1–5)	T1	0.86	199	3.26 (0.65)	295	3.23 (0.60)
	T2	0.88	152	3.39 (0.70)	273	3.30 (0.59)
	T3	0.89	117	3.47 (0.71)	241	3.33 (0.62)
	T4	0.93	111	3.45 (0.78)	227	3.44 (0.71)
Resilience (13 items, scale range: 1–7)	T1	0.89	199	4.95 (0.89)	292	4.98 (0.96)
	T2	0.90	150	5.08 (0.95)	270	5.05 (0.90)
	T3	0.93	115	5.14 (1.05)	238	5.10 (0.92)
	T4	0.93	111	5.26 (1.07)	227	5.26 (0.95)
Sleeping troubles (4 items, scale range: 1–5)	T1	0.87	199	2.71 (0.99)	292	2.83 (1.02)
	T2	0.88	150	2.41 (0.95)	269	2.76 (1.03)
	T3	0.90	115	2.37 (0.91)	237	2.60 (1.05)
	T4	0.90	111	2.22 (0.87)	227	2.54 (1.01)
Social community at work (3 items, scale range: 1–5)	T1	0.83	199	3.82 (0.76)	292	3.87 (0.75)
	T2	0.84	150	3.86 (0.85)	270	3.84 (0.72)
	T3	0.86	115	3.91 (0.77)	237	3.84 (0.73)
	T4	0.87	111	3.95 (0.78)	220	3.85 (0.76)
Physical health impairment (4 items, scale range: 1–5)	T1	0.93	199	1.94 (1.03)	292	2.07 (1.03)
	T2	0.94	150	1.97 (1.03)	269	1.94 (0.97)
	T3	0.93	115	1.97 (1.04)	237	2.01 (0.97)
	T4	0.95	110	1.83 (0.94)	227	1.93 (0.98)