Table 1.

Baseline characteristics of the total study population and the intervention group in a longitudinal study among 726 employees

			Total Study Population (n = 726)		Intervention Group (n = 378)		Reference Group (n = 348)
			n	%	n	%	n	%
Demographics
	Female gender		403	56%	209	55%	194	56%
	Age (years)
		<30	100	14%	56	15%	44	13%
		30-39	203	28%	94	25%	109	31%
		40-49	228	31%	112	30%	116	33%
		50+	194	27%	115	31%	79	23%
	Education level
		Low	131	18%	60	16%	71	20%
		Intermediate	253	35%	131	35%	122	35%
		High	341	47%	186	49%	155	45%
	Dutch ethnicity		615	85%	319	85%	296	85%
	Married/cohabiting		547	75%	285	76%	262	75%
	Behavior
		Insufficient moderate physical activity	223	31%	115	31%	108	31%
		Insufficient vigorous physical activity	502	69%	258	68%	244	70%
		Insufficient fruit or vegetable intake	323	45%	159	42%	164	47%
		Smoking	117	16%	60	16%	57	17%
		Excessive alcohol	27	4%	13	3%	14	4%
Social cognitive variables
	Physical activity
		Positive attitude	355	49%	197	52%	158	45%
		High social support	112	15%	55	15%	57	16%
		High self-efficacy	562	77%	288	76%	274	79%
		Intention to increase physical activity	348	48%	167	44%	181	52%
	Fruit and vegetable intake
		Positive attitude	510	70%	265	70%	245	71%
		High social support	91	13%	46	12%	45	13%
		High self-efficacy	599	83%	319	84%	280	81%
		Intention to increase intake	124	17%	68	18%	56	16%
	Health indicators
		Overweight/obese	293	40%	152	40%	141	41%
		Poor/moderate general health	39	5%	17	5%	22	6%
		Lowest quartile mental health	181	25%	97	26%	84	24%
		Lowest quartile physical health	181	25%	90	24%	91	26%
		Elevated blood pressure	217	30%	113	30%	104	30%
		Elevated total cholesterol level	301	42%	161	43%	140	41%
		Poor predicted maximum oxygen uptake	90	13%	43	12%	47	15%