J. Med. Internet Res. - Impact of length or relevance of questionnaires on attrition in online trials: randomized controlled trial.

Tópicos

{ intervent(3218) particip(2042) group(1664) }
{ use(1733) differ(960) four(931) }
{ measur(2081) correl(1212) valu(896) }
{ survey(1388) particip(1329) question(1065) }
{ studi(2440) review(1878) systemat(933) }
{ age(1611) year(1155) adult(843) }
{ time(1939) patient(1703) rate(768) }
{ studi(1410) differ(1259) use(1210) }
{ search(2224) databas(1162) retriev(909) }
{ studi(1119) effect(1106) posit(819) }
{ patient(1821) servic(1111) care(1106) }
{ assess(1506) score(1403) qualiti(1306) }
{ treatment(1704) effect(941) patient(846) }
{ risk(3053) factor(974) diseas(938) }
{ blood(1257) pressur(1144) flow(957) }
{ patient(2837) hospit(1953) medic(668) }
{ take(945) account(800) differ(722) }
{ control(1307) perform(991) simul(935) }
{ model(2220) cell(1177) simul(1124) }
{ research(1085) discuss(1038) issu(1018) }
{ research(1218) medic(880) student(794) }
{ high(1669) rate(1365) level(1280) }
{ use(976) code(926) identifi(902) }
{ implement(1333) system(1263) develop(1122) }
{ can(774) often(719) complex(702) }
{ data(1737) use(1416) pattern(1282) }
{ system(1976) rule(880) can(841) }
{ sequenc(1873) structur(1644) protein(1328) }
{ motion(1329) object(1292) video(1091) }
{ problem(2511) optim(1539) algorithm(950) }
{ first(2504) two(1366) second(1323) }
{ can(981) present(881) function(850) }
{ health(1844) social(1437) communiti(874) }
{ estim(2440) model(1874) function(577) }
{ decis(3086) make(1611) patient(1517) }
{ activ(1452) weight(1219) physic(1104) }
{ model(3404) distribut(989) bayesian(671) }
{ imag(1947) propos(1133) code(1026) }
{ inform(2794) health(2639) internet(1427) }
{ imag(1057) registr(996) error(939) }
{ bind(1733) structur(1185) ligand(1036) }
{ method(1219) similar(1157) match(930) }
{ featur(3375) classif(2383) classifi(1994) }
{ imag(2830) propos(1344) filter(1198) }
{ network(2748) neural(1063) input(814) }
{ imag(2675) segment(2577) method(1081) }
{ patient(2315) diseas(1263) diabet(1191) }
{ surgeri(1148) surgic(1085) robot(1054) }
{ framework(1458) process(801) describ(734) }
{ error(1145) method(1030) estim(1020) }
{ chang(1828) time(1643) increas(1301) }
{ learn(2355) train(1041) set(1003) }
{ concept(1167) ontolog(924) domain(897) }
{ clinic(1479) use(1117) guidelin(835) }
{ algorithm(1844) comput(1787) effici(935) }
{ extract(1171) text(1153) clinic(932) }
{ method(1557) propos(1049) approach(1037) }
{ data(1714) softwar(1251) tool(1186) }
{ design(1359) user(1324) use(1319) }
{ care(1570) inform(1187) nurs(1089) }
{ general(901) number(790) one(736) }
{ method(984) reconstruct(947) comput(926) }
{ featur(1941) imag(1645) propos(1176) }
{ case(1353) use(1143) diagnosi(1136) }
{ howev(809) still(633) remain(590) }
{ data(3963) clinic(1234) research(1004) }
{ perform(999) metric(946) measur(919) }
{ system(1050) medic(1026) inform(1018) }
{ import(1318) role(1303) understand(862) }
{ model(2341) predict(2261) use(1141) }
{ visual(1396) interact(850) tool(830) }
{ compound(1573) activ(1297) structur(1058) }
{ perform(1367) use(1326) method(1137) }
{ spatial(1525) area(1432) region(1030) }
{ record(1888) medic(1808) patient(1693) }
{ health(3367) inform(1360) care(1135) }
{ model(3480) simul(1196) paramet(876) }
{ monitor(1329) mobil(1314) devic(1160) }
{ ehr(2073) health(1662) electron(1139) }
{ state(1844) use(1261) util(961) }
{ model(2656) set(1616) predict(1553) }
{ data(2317) use(1299) case(1017) }
{ medic(1828) order(1363) alert(1069) }
{ signal(2180) analysi(812) frequenc(800) }
{ cost(1906) reduc(1198) effect(832) }
{ group(2977) signific(1463) compar(1072) }
{ sampl(1606) size(1419) use(1276) }
{ gene(2352) biolog(1181) express(1162) }
{ data(3008) multipl(1320) sourc(1022) }
{ activ(1138) subject(705) human(624) }
{ use(2086) technolog(871) perceiv(783) }
{ analysi(2126) use(1163) compon(1037) }
{ structur(1116) can(940) graph(676) }
{ cancer(2502) breast(956) screen(824) }
{ drug(1928) target(777) effect(648) }
{ result(1111) use(1088) new(759) }
{ process(1125) use(805) approach(778) }
{ method(1969) cluster(1462) data(1082) }
{ method(2212) result(1239) propos(1039) }
{ detect(2391) sensit(1101) algorithm(908) }

Resumo

CKGROUND: There has been limited study of factors influencing response rates and attrition in online research. Online experiments were nested within the pilot (study 1, n = 3780) and main trial (study 2, n = 2667) phases of an evaluation of a Web-based intervention for hazardous drinkers: the Down Your Drink randomized controlled trial (DYD-RCT).OBJECTIVES: The objective was to determine whether differences in the length and relevance of questionnaires can impact upon loss to follow-up in online trials.METHODS: A randomized controlled trial design was used. All participants who consented to enter DYD-RCT and completed the primary outcome questionnaires were randomized to complete one of four secondary outcome questionnaires at baseline and at follow-up. These questionnaires varied in length (additional 23 or 34 versus 10 items) and relevance (alcohol problems versus mental health). The outcome measure was the proportion of participants who completed follow-up at each of two follow-up intervals: study 1 after 1 and 3 months and study 2 after 3 and 12 months.RESULTS: At all four follow-up intervals there were no significant effects of additional questionnaire length on follow-up. Randomization to the less relevant questionnaire resulted in significantly lower rates of follow-up in two of the four assessments made (absolute difference of 4%, 95% confidence interval [CI] 0%-8%, in both study 1 after 1 month and in study 2 after 12 months). A post hoc pooled analysis across all four follow-up intervals found this effect of marginal statistical significance (unadjusted difference, 3%, range 1%-5%, P = .01; difference adjusted for prespecified covariates, 3%, range 0%-5%, P = .05).CONCLUSIONS: Apparently minor differences in study design decisions may have a measurable impact on attrition in trials. Further investigation is warranted of the impact of the relevance of outcome measures on follow-up rates and, more broadly, of the consequences of what we ask participants to do when we invite them to take part in research studies.TRIAL REGISTRATION: ISRCTN Register 31070347; http://www.controlled-trials.com/ISRCTN31070347/31070347 Archived by WebCite at (http://www.webcitation.org/62cpeyYaY).

Resumo Limpo

ckground limit studi factor influenc respons rate attrit onlin research onlin experi nest within pilot studi n main trial studi n phase evalu webbas intervent hazard drinker drink random control trial dydrctobject object determin whether differ length relev questionnair can impact upon loss followup onlin trialsmethod random control trial design use particip consent enter dydrct complet primari outcom questionnair random complet one four secondari outcom questionnair baselin followup questionnair vari length addit versus item relev alcohol problem versus mental health outcom measur proport particip complet followup two followup interv studi month studi monthsresult four followup interv signific effect addit questionnair length followup random less relev questionnair result signific lower rate followup two four assess made absolut differ confid interv ci studi month studi month post hoc pool analysi across four followup interv found effect margin statist signific unadjust differ rang p differ adjust prespecifi covari rang p conclus appar minor differ studi design decis may measur impact attrit trial investig warrant impact relev outcom measur followup rate broad consequ ask particip invit take part research studiestri registr isrctn regist httpwwwcontrolledtrialscomisrctn archiv webcit httpwwwwebcitationorgcpeyyay

Resumos Similares

J Telemed Telecare - A review of the use of mobile phone text messaging in clinical and healthy behaviour interventions. ( 0,911779566518006 )
J. Med. Internet Res. - Impact of seasonality on recruitment, retention, adherence, and outcomes in a web-based smoking cessation intervention: randomized controlled trial. ( 0,863095747371405 )
J Telemed Telecare - Attitudes of women in midlife to web-based interventions for promoting physical activity. ( 0,857796932167312 )
J. Med. Internet Res. - Effectiveness of a Web-based multiple tailored smoking cessation program: a randomized controlled trial among Dutch adult smokers. ( 0,857722248603055 )
J. Med. Internet Res. - Usage of a generic web-based self-management intervention for breast cancer survivors: substudy analysis of the BREATH trial. ( 0,857091786657441 )
J. Med. Internet Res. - Effect of tailoring in an internet-based intervention for smoking cessation: randomized controlled trial. ( 0,856786865431908 )
J. Med. Internet Res. - Effects of a guided web-based smoking cessation program with telephone counseling: a cluster randomized controlled trial. ( 0,85552508954523 )
J Telemed Telecare - A pilot programme using mobile phones for HIV prevention. ( 0,85520666633128 )
J. Med. Internet Res. - Efficacy of a text message-based smoking cessation intervention for young people: a cluster randomized controlled trial. ( 0,855025341557417 )
J. Med. Internet Res. - A text messaging-based smoking cessation program for adult smokers: randomized controlled trial. ( 0,854432328375975 )
J. Med. Internet Res. - Preventing smoking relapse via Web-based computer-tailored feedback: a randomized controlled trial. ( 0,85167810473706 )
J. Med. Internet Res. - Improving adherence to antiretroviral therapy for youth living with HIV/AIDS: a pilot study using personalized, interactive, daily text message reminders. ( 0,846997507152115 )
J. Med. Internet Res. - Two fully automated web-based interventions for risky alcohol use: randomized controlled trial. ( 0,846694747512984 )
J. Med. Internet Res. - Internet-based brief personalized feedback intervention in a non-treatment-seeking population of adult heavy drinkers: a randomized controlled trial. ( 0,845736727707532 )
Int J Med Inform - Engagement in My Child's Asthma, an interactive web-based pediatric asthma management intervention. ( 0,842925868817335 )
J. Med. Internet Res. - Effectiveness of a web-based brief alcohol intervention and added value of normative feedback in reducing underage drinking: a randomized controlled trial. ( 0,842856156873432 )
J. Med. Internet Res. - Effectiveness of a Web-based intervention aimed at healthy dietary and physical activity behavior: a randomized controlled trial about users and usage. ( 0,842370055816684 )
J. Med. Internet Res. - A web-based program improves physical activity outcomes in a primary care angina population: randomized controlled trial. ( 0,842304122383284 )
J. Med. Internet Res. - Internet-based recruitment to a depression prevention intervention: lessons from the Mood Memos study. ( 0,841434714362116 )
J. Med. Internet Res. - Evaluation of a Web-based intervention to promote hand hygiene: exploratory randomized controlled trial. ( 0,840907544202773 )
J. Med. Internet Res. - Prevention of generalized anxiety disorder using a web intervention, iChill: randomized controlled trial. ( 0,840896445834852 )
J. Med. Internet Res. - Efficacy of a Web-based computer-tailored smoking prevention intervention for Dutch adolescents: randomized controlled trial. ( 0,839286811331347 )
Int J Med Inform - Results of a randomized controlled trial to assess the effects of a mobile SMS-based intervention on treatment adherence in HIV/AIDS-infected Brazilian women and impressions and satisfaction with respect to incoming messages. ( 0,838701831985088 )
J. Med. Internet Res. - Enhancing retention of an Internet-based cohort study of men who have sex with men (MSM) via text messaging: randomized controlled trial. ( 0,83869361758604 )
Telemed J E Health - Effectiveness of healthy relationships video-group-A videoconferencing group intervention for women living with HIV: preliminary findings from a randomized controlled trial. ( 0,837357089872812 )
J. Med. Internet Res. - Using ecological momentary assessment to test the effectiveness of a web-based brief alcohol intervention over time among heavy-drinking students: randomized controlled trial. ( 0,837041860345671 )
J. Med. Internet Res. - Web-based cognitive behavioral self-help intervention to reduce cocaine consumption in problematic cocaine users: randomized controlled trial. ( 0,83234144376485 )
J. Med. Internet Res. - Development and preliminary evaluation of an internet-based healthy eating program: randomized controlled trial. ( 0,831064076261101 )
J. Med. Internet Res. - Do email and mobile phone prompts stimulate primary school children to reuse an Internet-delivered smoking prevention intervention? ( 0,830859583570005 )
J. Med. Internet Res. - Effects of a Web-based tailored intervention to reduce alcohol consumption in adults: randomized controlled trial. ( 0,82935772778912 )
J. Med. Internet Res. - Influence of delivery strategy on message-processing mechanisms and future adherence to a Dutch computer-tailored smoking cessation intervention. ( 0,828621789316618 )
J. Med. Internet Res. - Adherence to a smartphone application for weight loss compared to website and paper diary: pilot randomized controlled trial. ( 0,827616126962402 )
J. Med. Internet Res. - Initial and sustained participation in an internet-delivered long-term worksite health promotion program on physical activity and nutrition. ( 0,825943767740861 )
BMC Med Inform Decis Mak - Effects of and satisfaction with short message service reminders for patient medication adherence: a randomized controlled study. ( 0,825067432784948 )
J. Med. Internet Res. - A service-based evaluation of a therapist-supported online cognitive behavioral therapy program for depression. ( 0,823752877954518 )
J. Med. Internet Res. - Periodic email prompts to re-use an internet-delivered computer-tailored lifestyle program: influence of prompt content and timing. ( 0,823374546172882 )
J. Med. Internet Res. - Interpreting the outcomes of automated internet-based randomized trials: example of an International Smoking Cessation Study. ( 0,822277463177427 )
J. Med. Internet Res. - Surviving and thriving with cancer using a Web-based health behavior change intervention: randomized controlled trial. ( 0,822195355626248 )
J. Med. Internet Res. - Use of email and telephone prompts to increase self-monitoring in a Web-based intervention: randomized controlled trial. ( 0,821233804055715 )
J. Med. Internet Res. - Effectiveness of different Web-based interventions to prepare co-smokers of cigarettes and cannabis for double cessation: a three-arm randomized controlled trial. ( 0,821031475288904 )
J Telemed Telecare - A randomised controlled trial of providing personalised cardiovascular risk information to modify health behaviour. ( 0,817854102233007 )
J. Med. Internet Res. - A theory-based video messaging mobile phone intervention for smoking cessation: randomized controlled trial. ( 0,817195849634117 )
J. Med. Internet Res. - Reducing alcohol use during pregnancy via health counseling by midwives and internet-based computer-tailored feedback: a cluster randomized trial. ( 0,816938791570332 )
J. Med. Internet Res. - Effectiveness of Web-based versus face-to-face delivery of education in prescription of falls-prevention exercise to health professionals: randomized trial. ( 0,816671033076079 )
J. Med. Internet Res. - Does brief telephone support improve engagement with a web-based weight management intervention? Randomized controlled trial. ( 0,815987168280719 )
Int J Med Inform - Evaluation of mobile phone and Internet intervention on waist circumference and blood pressure in post-menopausal women with abdominal obesity. ( 0,815986304320754 )
J. Med. Internet Res. - Participants, usage, and use patterns of a web-based intervention for the prevention of depression within a randomized controlled trial. ( 0,815180349749814 )
J. Med. Internet Res. - Effectiveness of a proactive mail-based alcohol Internet intervention for university students: dismantling the assessment and feedback components in a randomized controlled trial. ( 0,814971430833233 )
J. Med. Internet Res. - Partnership for health-2, a web-based versus print smoking cessation intervention for childhood and young adult cancer survivors: randomized comparative effectiveness study. ( 0,814831012466252 )
J. Med. Internet Res. - Engagement and retention: measuring breadth and depth of participant use of an online intervention. ( 0,814660039992825 )
J. Med. Internet Res. - Internal versus external motivation in referral of primary care patients with depression to an internet support group: randomized controlled trial. ( 0,814530375087734 )
J. Med. Internet Res. - Short-term effectiveness of web-based guided self-help for phobic outpatients: randomized controlled trial. ( 0,813249586465128 )
J. Med. Internet Res. - Web-enhanced tobacco tactics with telephone support versus 1-800-QUIT-NOW telephone line intervention for operating engineers: randomized controlled trial. ( 0,813214878938619 )
J. Med. Internet Res. - A smartphone-based intervention with diaries and therapist-feedback to reduce catastrophizing and increase functioning in women with chronic widespread pain: randomized controlled trial. ( 0,812423923681061 )
J. Med. Internet Res. - Cardiovascular health effects of internet-based encouragements to do daily workplace stair-walks: randomized controlled trial. ( 0,812212884257597 )
J. Med. Internet Res. - Feasibility and effectiveness of a web-based positive psychology program for youth mental health: randomized controlled trial. ( 0,812115822100884 )
J. Med. Internet Res. - The effects of combining Web-based eHealth with telephone nurse case management for pediatric asthma control: a randomized controlled trial. ( 0,809429703292746 )
BMC Med Inform Decis Mak - Process evaluation of a web-based intervention aimed at empowerment of disability benefit claimants. ( 0,807470973365579 )
J. Med. Internet Res. - Daily text messaging for weight control among racial and ethnic minority women: randomized controlled pilot study. ( 0,807186836435188 )
J Telemed Telecare - Efficacy of a programme for workers with metabolic syndrome based on an e-health system in the workplace: a pilot study. ( 0,806754427758095 )
J. Med. Internet Res. - The effectiveness of a Web-based personalized feedback and social norms alcohol intervention on United Kingdom university students: randomized controlled trial. ( 0,805894172294428 )
J. Med. Internet Res. - MEMO--a mobile phone depression prevention intervention for adolescents: development process and postprogram findings on acceptability from a randomized controlled trial. ( 0,805274983565796 )
J Telemed Telecare - Use of mobile phone text messaging to deliver an individualized smoking behaviour intervention in Chinese adolescents. ( 0,803144681043839 )
J Telemed Telecare - The effect of psychosocial interventions delivered by telephone and videophone on quality of life in early-stage breast cancer survivors and their supportive partners. ( 0,803053235163523 )
J. Med. Internet Res. - Effectiveness of a web-based physical activity intervention in patients with knee and/or hip osteoarthritis: randomized controlled trial. ( 0,802605269139422 )
J. Med. Internet Res. - A smartphone-based intervention with diaries and therapist feedback to reduce catastrophizing and increase functioning in women with chronic widespread pain. part 2: 11-month follow-up results of a randomized trial. ( 0,801733556799865 )
J. Med. Internet Res. - Development of web-based computer-tailored advice to promote physical activity among people older than 50 years. ( 0,801608653154603 )
J. Med. Internet Res. - Motivational interviewing in a Web-based physical activity intervention with an avatar: randomized controlled trial. ( 0,801388701812477 )
J. Med. Internet Res. - Exploratory study of web-based planning and mobile text reminders in an overweight population. ( 0,800852866939258 )
J. Med. Internet Res. - The effect of program design on engagement with an internet-based smoking intervention: randomized factorial trial. ( 0,797312089235072 )
J. Med. Internet Res. - Overcoming Addictions, a Web-based application, and SMART Recovery, an online and in-person mutual help group for problem drinkers, part 1: three-month outcomes of a randomized controlled trial. ( 0,796718669427519 )
BMC Med Inform Decis Mak - A cohort study of a tailored web intervention for preconception care. ( 0,796381788862604 )
J. Med. Internet Res. - Effectiveness of a Web-based tailored intervention (E-health4Uth) and consultation to promote adolescents' health: randomized controlled trial. ( 0,796348257201902 )
J. Med. Internet Res. - Curbing alcohol use in male adults through computer generated personalized advice: randomized controlled trial. ( 0,7938818036718 )
J Am Med Inform Assoc - Evaluating adherence to the International Committee of Medical Journal Editors' policy of mandatory, timely clinical trial registration. ( 0,793578179976437 )
Telemed J E Health - Can an evidence-based book club intervention delivered via a tablet computer improve physical activity in middle-aged women? ( 0,789670928919153 )
J. Med. Internet Res. - A web-based sexual violence bystander intervention for male college students: randomized controlled trial. ( 0,78928809689444 )
J. Med. Internet Res. - Providing web-based feedback and social norms information to reduce student alcohol intake: a multisite investigation. ( 0,788978921219366 )
J. Med. Internet Res. - Effects of internet-based tailored advice on the use of cholesterol-lowering interventions: a randomized controlled trial. ( 0,787574351957067 )
J. Med. Internet Res. - Use of a text message program to raise type 2 diabetes risk awareness and promote health behavior change (part I): assessment of participant reach and adoption. ( 0,78650565885953 )
J. Med. Internet Res. - Demographic, behavioral, and psychosocial correlates of using the website component of a worksite physical activity and healthy nutrition promotion program: a longitudinal study. ( 0,783822926859488 )
J. Med. Internet Res. - Multilevel growth curve analyses of treatment effects of a Web-based intervention for stress reduction: randomized controlled trial. ( 0,783133065117932 )
J. Med. Internet Res. - Comparison of trial participants and open access users of a web-based physical activity intervention regarding adherence, attrition, and repeated participation. ( 0,781878751300048 )
J. Med. Internet Res. - Text messaging data collection for monitoring an infant feeding intervention program in rural China: feasibility study. ( 0,781244237100385 )
Telemed J E Health - Evaluating opportunities for text message communication: a survey of parents and teens. ( 0,780955507679256 )
J. Med. Internet Res. - Comparison of text and video computer-tailored interventions for smoking cessation: randomized controlled trial. ( 0,780927902998241 )
J. Med. Internet Res. - Effectiveness of web-based tailored advice on parents' child safety behaviors: randomized controlled trial. ( 0,779882049798518 )
J. Med. Internet Res. - Effectiveness of web-based self-disclosure peer-to-peer support for weight loss: randomized controlled trial. ( 0,779867481499816 )
J. Med. Internet Res. - Online advertising to reach and recruit Latino smokers to an internet cessation program: impact and costs. ( 0,779212848906327 )
Appl Clin Inform - Case report: patient portal versus telephone recruitment for a surgical research study. ( 0,777534238596127 )
J. Med. Internet Res. - Attrition revisited: adherence and retention in a web-based alcohol trial. ( 0,776696790875402 )
J. Med. Internet Res. - Effectiveness of a web-based intervention for problem drinkers and reasons for dropout: randomized controlled trial. ( 0,773118252738015 )
J. Med. Internet Res. - Do participants' preferences for mode of delivery (text, video, or both) influence the effectiveness of a Web-based physical activity intervention? ( 0,772229836614666 )
J Telemed Telecare - Effects of tooth scaling reminders for dental outpatients. ( 0,771883881145077 )
J. Med. Internet Res. - The effectiveness of loyalty rewards to promote the use of an Internet-based heart health program. ( 0,771793090182483 )
J. Med. Internet Res. - Usage and effectiveness of a fully automated, open-access, Spanish Web-based smoking cessation program: randomized controlled trial. ( 0,771283362263879 )
J. Med. Internet Res. - Engagement promotes abstinence in a web-based cessation intervention: cohort study. ( 0,771155479359566 )
J. Med. Internet Res. - Engagement in a diabetes self-management website: usage patterns and generalizability of program use. ( 0,771083417129391 )
J. Med. Internet Res. - Differences in reach and attrition between Web-based and print-delivered tailored interventions among adults over 50 years of age: clustered randomized trial. ( 0,769785074880881 )
Comput Methods Programs Biomed - Quantifying the exact allocation ratios in randomized clinical trials with biased coin randomization. ( 0,769632393171283 )