Table 14.

Variance analysis on various variables with different daily delivery order quantity.

Items	<30	30–40	40–60	>60	F
	M ± SD
Perceived social support	59.47 ± 14.85	56.25 ± 14.31	52.61 ± 16.34	48.03 ± 17.16	12.78 ***
Job burnout	32.35 ± 12.71	32.32 ± 12.37	34.51 ± 12.16	36.56 ± 10.27	2.49
Psychological capital	102.35 ± 21.06	97.52 ± 24.04	92.82 ± 21.36	78.83 ± 21.26	16.97 ***
Mental health	40.39 ± 6.09	39.51 ± 7.59	37.99 ± 7.49	34.28 ± 6.92	18.27 ***

*** represents p < 0.001.