. 2019 Oct 11;58(3):224–237. doi: 10.2486/indhealth.2019-0067

Table 2. Predicting task-performance in upper white- (n=1,754), lower white- (n=637), and blue-collar workers (n=906).

Predictors		Task-performance

Sub-sample		Upper white-collars					Lower white-collars					Blue-collars

Coefficients		β	β	β	β	r	β	β	β	β	r	β	β	β	β	r
S1: Back-grounds
	Sex^a	0.01	0.01	0.01	−0.02	0.01	−0.04	−0.05	−0.06	−0.08*	−0.02	−0.02	−0.03	−0.03	−0.04	−0.02
	Education^b	0.04	0.04	0.04	0.03	0.04*	−0.03	−0.02	−0.03	−0.03	−0.02	−0.01	−0.00	0.00	−0.01	−0.01
	Age^b	0.06**	0.06**	0.06*	0.04	0.04	−0.01	−0.02	−0.01	−0.01	−0.02	0.03	0.01	0.02	0.01	0.02
	Children^c	0.01	0.01	0.01	0.01	−0.00	0.05	0.05	0.06	0.06	0.03	−0.01	−0.00	−0.00	−0.00	−0.00
	ΔR²	0.004					0.002					0.001

S2: Buffer
	SOC	0.22***	0.21***	0.22***	0.20***	0.20***	0.28***	0.28***	0.28***	0.23***	0.27***	0.25***	0.27***	0.27***	0.24***	0.25***
	ΔR²	0.040***					0.075***					0.063***

S3: IJP		−0.17***	−0.18***	−0.18***	−0.03	−0.15***	−0.09*	−0.02	0.00	0.13**	−0.09*	−0.04	0.04	0.06	0.16***	−0.03
	ΔR²	0.028***					0.009*					0.002

S4: ICP			0.01	0.01	0.03	−0.08***		−0.13**	−0.10*	−0.04	−0.12**		−0.14***	−0.11**	−0.06	−0.08*
	ΔR²		0.000					0.012**					0.013***

S5: LD				0.02	0.08**	−0.03			−0.11*	−0.04	−0.14***			−0.08*	−0.04	−0.08**
	ΔR²			0.000					0.008*					0.005*

S6: WI					−0.34***	−0.31***				−0.36***	−0.33***				−0.31***	−0.28***
	ΔR²				0.075***					0.079***					0.069***

^a: female/male; ^b: continuous; ^c: no/yes; S1: Step1; S2: Step2; S3: Step3; S4: Step4; S5: Step5; S6: Step6; SOC: selecting-optimizing-compensating strategies; IJP: intensified job-related planning and decision-making demands;, ICP: career planning and decision-making demands; LD: intensified learning demands; WI: work intensification. *p<0.05, **p<0.01, ***p<0.001. ΔR² Change in explanation rates when the predictor (S2, S3, S4, S5, S6) or the group of predictors (S1) were entered into analysis.