Validation Studies of the European Prospective Investigation into Cancer and Nutrition (EPIC) Physical Activity Questions

• Wareham et al. 2003
• Pols et al. 1997
• Pols et al. 1997
• Pols et al. 1996

Wareham et al. 2003

See reference #24

Methods

Relationship of EPIC Physical Activity Index (PAI), and physical activity ratio (PAR) calculated from 4-day heart-rate monitoring; VO_{2 max}, energy intake/BMR assessed by 7-day food diaries (EI/BMR).

Sample

173 men and women; 40 to 65 years of age

Summary Results

Physical Activity Index (EPIC)
	Inactive	Mod Inactive	Mod active	Active
PAR*	2.34	2.25	2.45	2.6
VO2 max**	26	28	30	31
EI/BMR Men	1.26	1.3	1.33	1.42

* p for trend 0.003
** p for trend 0.001

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Pols et al. 1997

See reference #25

Methods

Relationship between EPIC PAQ items and 3-day activity diary, repeated four times (Spearman correlation)

Sample

126 men and women; 20 and 70 years of age

Summary Results

	Men		Women
	1st diary	3rd diary	1st diary	3rd diary
Walking	0.32	0.26	0.33	0.33
Cycling	0.46	0.48	0.48	0.49

No p values

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Pols et al. 1997

See reference #26

Methods

Relationship between pre-EPIC PAQ repeated 3 times, and four-times-repeated 3-day activity diary (Spearman correlation)

Sample

126 Dutch adults; 64 men, 62 women; 21-59 years of age

Summary Results

	1st EPIC PAQ	3rd EPIC PAQ
Men	0.66 (0.49-0.78)	0.51 (0.28-0.68)
Women	0.43 (-0.18-0.63)	0.44 (0.20-0.64)

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Pols et al. 1996

See reference #27

Methods

Relation between pre-EPIC PAQ and BAQ to a physical activity diary (12 d) as the main reference method, a single 24-h Caltrac accelerometer score, and energy intake estimated from a 24-h dietary recall repeated 12 times (Pearson correlation)

Sample

33 women; 51-71 years of age

Summary Results

	Pre-EPIC
BAQ	77% agreement for classification below and above mean
Diary	0.64*
Caltrac	0.22
EI-recall	-0.43*

* p < 0.05

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