Table 2.

The mean scores of the Utrecht Work Engagement Scale–9 item among intervention and control groups from baseline to 3-month and 7-month follow-ups and effect size (Cohen d).

Survey	Program A (n=317)		Program B (n=316)		Control (n=316)		Program A vs control	Program B vs control
UWES-9a (range 0-6)	n	mean (SD)	n	mean (SD)	n	mean (SD)	Cohen db (95% CI)	Cohen db (95% CI)
Baseline	317	4.3 (1.2)	316	4.3 (1.3)	316	4.3 (1.3)	—	—
3 months	292	4.6 (1.2)	294	4.7 (1.1)	297	4.4 (1.3)	0.13 (–0.03 to 0.29)	0.16 (0.002 to 0.32)c
7 months	288	4.5 (1.3)	294	4.6 (1.1)	290	4.5 (1.3)	–0.004 (–0.17 to 0.16)	0.05 (–0.11 to 0.21)

^aUWES: Utrecht Work Engagement Scale–9 item.

^bEffect sizes were calculated among completers at baseline for each follow-up.

^cP=.049.