Means of increasing response rates in a Norwegian dietary survey among infants – results from a pseudo-randomized pilot study

Table 3 Response rates and odds ratios (OR) with 95% confidence intervals for participation according to mode of invitation, 12 month olds (n = 300)

	Participated/invited (response rate)	OR (95% CI)	p^a
Mode of invitation		1.3 (0.8, 2.1)	0.25
Postal invitation	75/150 (50%)
E-mail invitation	65/150 (43%)

^aDifferences in response rates between the groups were tested with logistic regression

ISSN: 1471-2288