. Author manuscript; available in PMC: 2009 Sep 11.

Published in final edited form as: Int J Sociol Soc Policy. 2009;29(3/4):164–175. doi: 10.1108/01443330910947534

Table 2.

Work Investment and Quality Variables for Workers^*

Variables	N	Mean	Standard deviation	Range
Most invested (high duration/high intensity)	825	0.280	0.449	0–1.0
Steady (high duration/low intensity)	825	0.198	0.398	0–1.0
Sporadic (low duration/high intensity)	825	0.268	0.443	0–1.0
Occasional (low duration/low intensity)	825	0.255	0.436	0–1.0
Specific learning opportunities	702	15.210	3.000	5.0–20.0
Supervisory support	551	6.461	1.768	1.3–10.0
Work demands and stress	679	19.686	4.786	8.7–34.8
Job security	705	2.673	0.425	1.0–3.0
Economic self-efficacy	824	11.915	2.185	3.0–15.0
Generalized self-efficacy	816	31.757	4.703	9.0–40.0

Note. Non-workers are excluded from this analysis.