Effectiveness of the blended-care lifestyle intervention ‘PerfectFit’: a cluster randomised trial in employees at risk for cardiovascular diseases

Table 1 Baseline characteristics of the study population (n = 491)

Characteristics	Limited intervention n = 217 (44.2%)	Extensive intervention n = 274 (55.8%)	P value	Missings n (%)
Individual characteristics:
Age, years (mean, SD)	51.62 (6.0)	50.19 (5.6)	0.003	1 (0.2)
Male (n,%):	166 (76.5)	233 (85.0)	0.016	0
Level of education (n,%):			0.009	20 (4.1)
Low	34 (17.9)	33 (12.6)
Medium	116 (61.1)	140 (53.6)
High	40 (21.1)	88 (33.7)
Health characteristics:
Self-rated general health:
Less than good	32 (17.2)	58 (22.3)	0.185	45 (9.2)
BMI (kg/m2) (mean, SD)	26.9 (3.4	27.5 (3.6)	0.066	15 (3.1)
Work characteristics:
Work ability (mean, SD)	7.91 (1.61)	7.92 (1.47)	0.946	50 (10.2)
Sickness absence (n,%)			0.894	53 (10.8)
0 days	92 (50.3)	123 (48.2)
1–9 days	72 (39.3)	106 (41.6)
≥ 10 days	19 (10.4)	26 (10.2)
Productivity loss at work (%, SD)	2.93 (3.46)	2.97 (3.62)	0.916	103 (21.0)
Health risk behaviour^a, n (%):
Lack of physical activity	133 (72.7)	188 (72.3)	0.932	48 (9.8)
Unhealthy diet^b	173 (94.5)	252 (97.7)	0.082	50 (10.2)
Smoking	28 (12.9)	55 (20.1)	0.071	0
Excessive alcohol use^c	26 (15.9)	32 (14.0)	0.617	99 (20.2)
High stress level^d	59 (32.2)	106 (41.1)	0.059	50 (10.2)

BMI body mass index, SD standard deviation
^aDefined as non-adherence to Dutch guidelines at baseline
^bUnhealthy diet is defined as eating less than 200 g vegetables per day, and eating less than 2 pieces of fruit per day
^cMeeting the alcohol guideline, which is not drinking more than 1 (women) or 2 (men) glasses of alcohol a day
^dHigh stress level is defined as several periods or permanent stress at work or at home or severe financial stress or 2 or more life events (Ref. Lancet 2004 Rosengren)

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