Table 8

Comparison of mean food group intakes before and after change in dietary data handling routines, sample II (n = 621)a.

Food groups

Method version

Dietary interviewer
Interviewer-Method interaction


One n = 259
Two n = 362





Adjusted means
p-value
p-value
p-value

Vegetables (gram)
Women
191
182
0.422
0.164


Men
178
178
0.989
0.069

Fruits (gram)
Women
227
196
0.031
0.563


Men
167
163
0.758
0.652

Milk (gram)
Women
348
335
0.577
0.532


Men
390
406
0.658
0.080

Cheese (gram)
Women
39
44
0.217
0.201


Men
42
38
0.463
0.402
0.010
Dietary fats (gram)
Women
32
37
0.029
0.240


Men
47
49
0.587
0.865
0.029
Bread (gram)
Women
78
76
0.642
0.692


Men
124
129
0.681
0.123
0.035
Meat (gram)
Women
111
116
0.337
0.500


Men
164
164
0.982
0.160

Fish (gram)
Women
42
39
0.361
0.583


Men
45
51
0.222
0.628


a adjusted for dietary interviewer and interviewer-method interaction

Wirfält et al. Nutrition Journal 2002 1:3   doi:10.1186/1475-2891-1-3