. 2012 Mar 5;14(2):e43. doi: 10.2196/jmir.1788

Table 2.

Determinants of sustained participation after 1 and 2 years in a workplace health promotion program (n=924).

Characteristics		1 year follow-up participation		2 year follow-up participation
		univariate	multivariate	univariate	multivariate
		OR (95%CI)	OR (95%CI)	OR (95%CI)	OR (95%CI)
Demographics
	Male gender	1.42^a (1.03-1.97)	1.04 (0.70-1.55)	1.41^a (1.05-1.90)	1.15 (0.81-1.64)
	Age <30 years	1.00	1.00	1.00	1.00
	Age 30-39 years	1.51 (0.97-2.36)	1.47 (0.70-1.55)	1.33 (0.86-2.05)	1.39 (0.83-2.32)
	Age 40-49 years	2.52^a (1.59-4.00)	2.36^a (1.35-4.12)	2.29^a (1.48-3.54)	2.08^a (1.25-3.47)
	Age ≥50 years	3.01^a (1.86-4.86)	2.38^a (1.30-4.33)	2.89^a (1.84-4.55)	2.47^a (1.43-4.26)
	Education high	1.00	1.00	1.00	1.00
	Education intermediate	1.14 (0.80-1.62)		0.98 (0.71-1.34)
	Education low	0.77 (0.52-1.14)		0.72 (0.50-1.03)
	Non-Dutch ethnicity	0.62^a (0.42-0.89)	0.77 (0.48-1.22)	0.47^a (0.33-0.67)	0.51^a (0.34-0.78)
	Unmarried / not cohabiting	0.61^a (0.44-0.85)		0.73^a (0.53-0.99)
Lifestyle factors
	<30min/day PA	0.75 (0.56-1.02)		0.83 (0.63-1.11)
	<3x 20min/day vigorous PA	1.03 (0.74-1.42)		1.14 (0.85-1.53)
	<400gr/day fruit & vegetables	0.65^a (0.49-0.88)		0.73^a (0.56-0.96)
	Current smoker	0.53^a (0.37-0.75)	0.52^a (0.33-0.82)	0.51^a (0.36-0.72)	0.54^a (0.35-0.82)
	Excessive alcohol intake	1.29 (0.50-3.33)		0.93 (0.41-2.13)
	BMI < 25 kg/m²	1.00	1.00	1.00	1.00
	25 kg/m² ≤ BMI < 30	1.17 (0.81-1.68)		0.98 (0.71-1.35)
	BMI ≥ 30 kg/m²	1.29 (0.69-2.42)		0.90 (0.53-1.53)
Health indicators^a
	Elevated blood pressure	1.22 (0.85-1.76)		0.95 (0.69-1.31)
	Poor predicted Vo₂max	0.54^a (0.38-0.76)	0.56^a (0.39-0.81)	0.66^a (0.48-0.91)	0.76 (0.55-1.06)
	Elevated total cholesterol	1.07 (0.77-1.49)		1.35^a (1.00-1.82)
	Decreased general health	0.71 (0.40-1.25)		0.49^a (0.28-0.84)
Work-related factors
	Physical job demands	0.71 (0.48-1.05)		0.75 (0.52-1.09)
Intervention group		0.63^a (0.47-0.85)	0.56^a (0.39-0.81)	0.85 (0.65-1.12)	0.92 (0.67-1.28)

* P<0.05, analyses adjusted for company

^a BMI, blood pressure, maximum oxygen uptake, and cholesterol level are only available for the participants in the physical health check (n=807)