Table 3. Factors associated with time pressure and job control (hierarchical regression analysis).

Explanatory variables, their distribution (%) a /means and (SD) b		Summary of the results of hierarchical regression analyses
		Time pressure			Job control
	%	β		∆ R 2	β		∆ R 2
Age	48.5 (10.9)	−0.031			−0.024
Gender
Men	38	ref			ref
Women	62	0.095	g		−0.088	g
Specialization
Nonspecialized	11	ref			ref
Specialization on going	22	−0.052			−0.045
Specialized	67	−0.033			0.108	g
Health care sector
Public	77	ref			ref
Private		−0.081			0.044
Employer
Public health center	28	ref			ref
Public hospital	54	−0.137	g		−0.094	f
Private sector	18	−0.264	g	0.13 g	0.093		0.11 g
Principal electronic patient information system
D	4	ref			ref
A	25	−0.108	e		0.086	e
B	14	−0.092	e		0.021
C	24	−0.121	f		0.004
Used the main system for
>6 y	49	ref			ref
3–6 y	25	0.009			−0.016
1–3 y	17	−0.032			−0.063	f
< 1 y	9	−0.023			−0.042	e
Number of clinical systems in daily use
Maximum 1	33	ref			ref
2	29	0.023			0.013
3	19	0.068	g		0.010
4 or more	19	0.027			−0.031
Participated in development of patient record system
No	52	ref			ref
Somewhat	41	0.022			0.077	g
Actively	7	0.055	f	0.01 g	0.079	g	0.02 g
Usability factors c
User friendliness	2.79 (0.84)	0.013			0.029
Perceived benefits	2.74 (0.80)	−0.030			0.020
Technical problems	2.82 (0.87)	0.126	g		−0.073	f
Feedback	3.88 (0.96)	−0.022			0.014
External cooperation	2.13 (0.73)	−0.019			0.013
Internal cooperation	3.40 (0.89)	0.005			0.033
Test results	3.16 (1.12)	−0.029			0.017
Additional features of the system d
Compiling patient statistics time consuming	58	0.096	g		−.012
Patient's medication list in a clear format	32	0.006			0.034
Nursing record is in easily readable	32	−0.035		0.03 g	0.075	g	0.03 g

Abbreviation: SD, standard deviation.

^aIn categorized variables.

^bIn continuous variables.

^cIn continuous variables, scales 1–5.

^dCathegorical variable: 1 = agree completely or somewhat, 0 = no opinion/disagree somewhat/disagree completely.

^e p  < 0.05.

^f p  < 0.01.

^g p  < 0.001.