Table 2. Means (M), Standard deviations (SD), and Cronbach’s alpha coefficients (α) for the BBI-9 scores, per sample.

		Burnout (9 items)		Exhaustion (3 items)		Cynicism (3 items)		Inadequacy (3 items)
Sample	n	M (SD)	α	M (SD)	α	M (SD)	α	M (SD)	α
Organisational samples
1 Administration	102	2.64 (0.94)	0.88	2.69 (1.01)	0.74	2.35 (1.01)	0.84	2.87 (1.26)	0.81
2 Education and culture	581	2.49 (0.91)	0.87	2.67 (1.00)	0.70	2.22 (1.05)	0.84	2.60 (1.21)	0.77
3 Social affairs and health	1,505	2.56 (1.02)	0.90	2.79 (1.07)	0.72	2.26 (1.19)	0.87	2.66 (1.29)	0.83
4 Bank	162	2.68 (0.93)	0.87	2.64 (0.97)	0.67	2.43 (1.13)	0.84	2.98 (1.19)	0.76
5 Engineering company	236	2.76 (0.94)	0.88	2.59 (0.97)	0.76	2.70 (1.13)	0.84	2.99 (1.20)	0.78
Managers
Time 1 (T1, in 2006)	742	2.52 (0.85)	0.85	2.85 (1.05)	0.70	2.27 (1.02)	0.82	2.44 (1.02)	0.71
Time 2 (T2, in 2008)	421	2.59 (0.96)	0.88	2.88 (1.23)	0.75	2.36 (1.09)	0.83	2.52 (1.21)	0.82
Time 3 (T3, in 2010)	369	2.66 (0.97)	0.88	2.85 (1.07)	0.72	2.46 (1.14)	0.85	2.66 (1.22)	0.80

ANCOVA for Burnout across groups: F (4) = 2.975, p=0.018; no significant group differences at p<0.05 level. ANCOVA for Exhaustion across groups: F (4) = 4.483, p=0.001 significant group differences: 2, 5 < 3. ANCOVA for Cynicism across groups: F (4) = 4.164, p=0.002; significant group differences: 2 < 5. ANCOVA for Inadequacy across groups: F (4) = 5.049, p=0.000; significant group differences: 2 < 4, 5; 3 < 4. Repeated measures ANCOVA across time for Burnout among managers: F (2,288) = 0.647, p=0.524. Repeated measures ANCOVA across time for Exhaustion among managers: F (2, 288) = 0.114, p=0.892. Repeated measures ANCOVA across time for Cynicism among managers: F (2, 288) = 1.323, p=0.268. Repeated measures ANCOVA across time for Inadequacy among managers: F (2, 288) = 0.343, p=0.710