Application of novel communication technologies to the study of farm families: a randomized controlled trial.
OBJECTIVE
The objective of this pilot study was to evaluate the efficacy of three different communication technologies for collection of health outcomes from farm households.


METHODS
A randomized controlled trial was conducted in central Saskatchewan, Canada in 2006. The 94 farms completing the baseline questionnaire were randomly assigned to follow-up by regular mail (n=30), computer telephony (n=32), or their choice of regular mail, computer telephony, or e-mail follow-up (n=32). The primary endpoints were absolute differences in the proportions of farms using the assigned method to provide follow-up data, 2 months post-recruitment.


RESULTS
Of the total study population, 51 (54.3%) provided follow-up information. Farms in the regular mail arm were more likely to submit follow-up data than farms in the other arms (27/30 regular mail vs. 23/32 choice vs. 2/32 computer telephony). The differences in proportions between the computer telephony and other study arms were highly significant (e.g., absolute difference between regular mail and computer telephony 83.7% [95% CI: 70.1%, 97.3%; p<0.001]).


CONCLUSIONS
The optimal method for health outcome data collection from farm households in our study is regular mail. Despite their novelty and attractiveness, caution is warranted when adopting modern communication technologies in population health research.
Monash University Accident Research Centre, Clayton, Melbourne, Victoria, 3800, Australia. lesley.day@muarc.monash.edu.au
Lesley
L
Day
James
J
Dosman
Louise
L
Hagel
Suzanne
S
Dostaler
Phyllis
P
Snodgrass
Jeremy
J
Thiessen
Robert J
RJ
Brison
H Jay
HJ
Biem
Barbara L
BL
Marlenga
Niels
N
Koehncke
Trever
T
Crowe
Punam
P
Pahwa
William
W
Pickett
D000293:Adolescent; D000328:Adult; D000383:Agriculture; D003142:Communication; D003146:Communications Media; D034742:Electronic Mail; D005192:Family Health; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010865:Pilot Projects; D011159:Population Surveillance / Q000379:methods*; D011177:Postal Service; D012424:Rural Population; D012525:Saskatchewan / Q000453:epidemiology; D011795:Surveys and Questionnaires; D013689:Telephone; D014947:Wounds and Injuries / Q000453:epidemiology