Time-tradeoff values and standard-gamble utilities assessed during telephone interviews versus face-to-face interviews.
The purpose of this study was to compare time-tradeoff values and standard-gamble utilities obtained during telephone interviews with those obtained through face-to-face interviews. Sixty-five patients with peripheral arterial occlusive disease completed both interviews. One week prior to the telephone interview, the patients received by mail a questionnaire in which the value and utility measures were presented in writing. The face-to-face interviews used the same questions, but the interviewer used visual aids. The mean time-tradeoff values were 0.84 (SD 0.20) vs 0.86 (SD 0.17) for the telephone and face-to-face interviews, respectively (p = 0.31). The mean standard-gamble utilities were 0.93 (SD 0.16) vs 0.92 (SD 0.17) for the telephone and face-to-face interviews, respectively (p = 0.26). In conclusion, telephone interviews yield similar time-tradeoff values and standard-gamble utilities compared with face-to-face interviews, suggesting that telephone interviews can replace face-to-face interviews.
van Wijck
E E
EE
University of Groningen, The Netherlands.
Bosch
J L
JL
Hunink
M G
MG
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001157:Arterial Occlusive Diseases / Q000523:psychology; D001294:Attitude to Health; D002755:Choice Behavior; D005260:Female; D006801:Humans; D007407:Interviews as Topic / Q000379:methods*; D016014:Linear Models; D008297:Male; D008875:Middle Aged; D009426:Netherlands; D011788:Quality of Life; D013689:Telephone