Table 4

Percentages reporting reasons for nonparticipation in the HUNT study among 3241 women (W) and 3677 men (M) having answered the nonparticipation questionnaire (QNP)
Reasons 20-39 years 40-59 years 60-79 years 80 + years All age groups
W M W M W M W M W M p§
Did not receive the invitation 13.3 14.9 6.2 9.3 8.5 9.1 8.0 10.7 9.5 11.1 0.02
Had not time /inconvenient session 60.7 64.5 54.9 61.9 34.8 40.2 14.3 20.8 50.7 56.6 <0.01
Don’t rely on such examinations 0.2 0.9 1.1 1.6 1.7 2.2 0.4 2.0 0.8 1.5 <0.01
No benefit of such examinations 0.3 1.7 1.6 1.8 3.1 4.8 6.3 8.1 1.7 2.6 <0.01
Too ill to attend the study 1.4 0.6 3.3 1.2 7.2 5.5 23.7 19.5 4.7 2.6 <0.01
Questions I did not wish to answer 2.1 1.2 3.9 3.5 6.8 7.0 3.6 4.0 3.7 3.5 0.61
Other reason 25.1 17.5 30.0 22.1 32.1 27.2 24.6 18.8 28.1 21.5 <0.01

§ p-values for chi-square tests comparing all men and women.

Langhammer et al.

Langhammer et al. BMC Medical Research Methodology 2012 12:143   doi:10.1186/1471-2288-12-143

Open Data