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Table 2 Bivariable and multivariable associations of baseline characteristics with time to survey completion in entire cohort

From: Personalized contact strategies and predictors of time to survey completion: analysis of two sequential randomized trials

 

Bivariable model

Multivariable model

Predictors

HR (95% CI)1

P-value

HR (95% CI)1

P-value

Participants demographics and last contact

    

Age ≤40 years old

0.64 (0.45, 0.92)

0.016

0.62 (0.41, 0.95)

0.029

Male

0.86 (0.64, 1.16)

0.315

0.70 (0.49, 1.01)

0.052

Minority2

0.55 (0.35, 0.84)

0.006

0.58 (0.36, 0.93)

0.023

Employment status3

    

Employed (full- or part- time)

Ref

 

Ref

 

Unemployed

0.95 (0.62, 1.44)

0.789

1.11 (0.71, 1.74)

0.653

Retired or disabled

1.27 (0.89, 1.79)

0.184

1.31 (0.83, 2.09)

0.248

Month since last contact

1.00 (0.98, 1.02)

0.869

0.99 (0.97, 1.01)

0.465

Physical and mental health status 3

    

FPI overall score

1.10 (0.88, 1.37)

0.418

0.84 (0.45, 1.56)

0.584

FPI body care subscale score

1.26 (0.96, 1.65)

0.099

1.27 (0.77, 2.10)

0.350

FPI maintaining household subscale score

1.06 (0.89, 1.26)

0.532

1.08 (0.71, 1.65)

0.709

FPI physical exercise subscale score

1.07 (0.90, 1.26)

0.443

1.13 (0.79, 1.62)

0.497

SF-36 Physical Component Summary

1.00 (0.99, 1.01)

0.805

0.99 (0.96, 1.02)

0.487

SF-36 Mental Component Summary

1.01 (1.00, 1.03)

0.010

1.01 (0.99, 1.04)

0.262

EQ-5D visual analogue scale

1.00 (0.99, 1.01)

0.201

1.00 (0.99, 1.01)

0.607

EQ-5D utility score

1.41 (0.75, 2.66)

0.290

0.97 (0.25, 3.70)

0.960

MMSE score

1.01 (0.92, 1.11)

0.835

0.95 (0.85, 1.07)

0.420

HADS-depression subscale score

0.97 (0.94, 1.00)

0.067

1.02 (0.95, 1.09)

0.445

HADS-anxiety subscale score

0.96 (0.93, 0.99)

0.008

0.99 (0.93, 1.06)

0.810

IES-R score

0.84 (0.71, 0.99)

0.040

1.07 (0.79, 1.45)

0.652

FACIT score

1.01 (0.99, 1.02)

0.068

1.01 (0.99, 1.03s)

0.223

  1. Abbreviations:SD (Standard Deviation), HR (Hazard Ratio), CI (Confidence Interval), FPI (Functional Performance Inventory), SF-36 (Short Form-36 Health Survey), EQ-5D (EuroQol Five Dimensions Questionnaire), MMSE (Mini-Mental State Examination), HADS (Hospital Anxiety and Depression Scale), IES-R (Impact of Event Scale-Revised), FACIT (Functional Assessment of Chronic Illness Therapy).
  2. 1A hazard ratio (HR) < 1 indicates a longer time to contact with the participant. All the significant associations (p<0.05) in models are highlighted in bold.
  3. 2Minority race includes African American, Asian, American Indian and Alaskan Native.
  4. 3Status as at last contact with research participant.
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BMC Medical Research Methodology

ISSN: 1471-2288

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