Table 2

Outcome effects* and validity scores of reviewed studies

Study

Dietary Behavior

Physical activity

Weight reduction

Internal validity (%)

External validity (%)


Physical activity


Hurling (2007) [21]

+a

89

44


Marcus (2007) [22]

+b (6 months only, not maintained at 12 months)

89

56


Spittaels (2007b) [24]

+b

56

78


Steele (2007) [25]

(+)a

89

44


Marshall (2003) [31]

(+)c(sub) (for those not active at baseline only)

78

67


Napolitano (2003) [32]

+b

67

44


Hager (2002) [34]

(+)d+e(sub) (for males only)

56

39


Pinto (2002) [35]

+f (3 months only, not maintained at 6 months)

67

67


Combined physical activity, dietary behavior &/or weight reduction


Booth (2008) [19]

(+) fat onlyf

(+)f

(+)f

56

67


Cook (2007) [20]

(+)g (overall diet including fat)

(+)g

(+)g

67

33


Spittaels (2007a) [23]

(+)dh

(+)dh & +dh(sub)

78

72


Vandelanotte (2005 & 2007) (6 month post-test) [27]

+ fatb

+b

44

56


(2 yr follow-up) [26]

(+) fath

(+)h


Winett (2007) [28]

+ fibre, F&Vb

Mb

+b (3 months only, not maintained at 6 months)

89

61


Hageman (2005) [29]

M-d

+/-d

78

56


Kypri (2005) [30]

+ F&Vb

+b

56

39


Veverka (2003) [33]

ND

+b

78

39


Key:

+ significant difference over time between treatment & control group OR significant difference between groups at post-test

(+) significant difference within groups over time but no significant difference between groups

+/- conflicting results

M positive effects on behavior mediators but not on actual behavior

M – negative effects on behavior mediators

(sub) outcome effect only for sub sample (1 worksite, n = 57)

ND no difference

*Outcome effects are reported for the effect of the computer-tailored intervention group as compared to the following control groups:

a Tailored (personal) verbal

b No treatment control group

c Tailored print comparison group

d Generic computerized comparison group

e Computerized comparison group with different method of tailoring

f Comparison treatment group on different/additional targeted behavior

g Generic print comparison group

h Comparison group of lower intensity

Neville et al. International Journal of Behavioral Nutrition and Physical Activity 2009 6:30   doi:10.1186/1479-5868-6-30

Open Data