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. 2016 Feb 18;5(1):e8. doi: 10.2196/ijmr.3712

Table 5.

Comparison of questionnaires completed on the Internet versus on paper: percentages, adjusted odds ratios (OR), and 95% confidence intervals (95% CI).

Characteristics Internet sample
na=1334
Paper sample
na=3557

Physician characteristic
(Model 1)
Patients characteristic
(Model 2)
Physician and patient characteristics
(Model 3)


% % P b OR 95% CI OR 95% CI OR 95% CI
Physician gender


.001






Men 73.45 65.27
1
1



Womenc 26.55 34.73
0.61 0.52-0.72

0.60 0.51-0.70
Physician age


.001






18-39 years old 29.20 21.40
1


1

40-49 32.16 28.23
0.87 0.72-1.04

0.86 0.72-1.04

50-59 27.96 35.81
0.56 0.46-0.68

0.55 0.45-0.67

60+ 10.68 14.56
0.54 0.42-0.70

0.52 0.40-0.68
Physician medical specialty


.001






GPs in private practice 11.21 20.69
1


1

Oncologists 3.24 4.00
1.05 0.68-1.63

1.02 0.62-1.67

Cardiologists 2.89 3.04
1.16 0.73-1.84

1.15 0.69-1.91

Geriatrists in hospitals 6.57 7.56
1.54 1.10-2.16

1.51 1.04-2.17

Geriatrists elsewhere 10.92 11.91
1.44 1.05-1.96

1.42 0.99-2.04

Emergency physicians 17.78 13.54
1.55 1.14-2.11

1.41 1.02-1.95

Anesthesiologists 18.72 9.25
2.39 1.76-3.25

2.18 1.50-3.16

Other specialist in hospital 3.74 3.80
1.29 0.86-1.94

1.24 0.79-1.94

Other specialist outside hospital 11.87 12.50
1.20 0.89-1.64

1.18 0.82-1.71

Other GPs 7.36 8.32
1.46 1.07-2.01

1.44 1.03-2.02

GPs in hospitals 5.71 5.40
1.75 1.21-2.54

1.69 1.12-2.57
Physician town size


.001






>200,000 25.59 15.26
1


1

<10,000 17.90 30.19
0.58 0.45-0.75

0.59 0.45-0.76

10,000-20,000 11.02 12.44
0.84 0.66-1.07

0.81 0.63-1.05

20,000-100,000 32.66 32.64
0.62 0.51-0.75

0.61 0.50-0.74

100,000-200,000 12.83 9.47
0.50 0.39-0.63

0.49 0.39-0.63
Death certificates (3 months)


.001






0 3.42 6.15
1


1

1-2 18.40 22.01
1.26 0.87-1.83

1.28 0.88-1.85

3-4 27.96 28.53
1.29 0.87-1.92

1.34 0.90-2.00

5-9 27.91 25.66
1.27 0.81-1.98

1.27 0.81-2.01

10-19 15.73 12.60
1.23 0.85-1.78

1.27 0.88-1.85

20+ 6.57 5.06
1.19 0.81-1.73

1.20 0.82-1.76
Physician medical decision


.0242







Sudden death 17.53 16.68
1
1
1

Life-prolonging treatment 12.62 12.04
1.05 0.80-1.36 0.90 0.69-1.16 1.02 0.77-1.35

Treatment withheld 13.12 15.10
1.02 0.79-1.32 0.88 0.68-1.14 1.05 0.80-1.39

Treatment withdrawn 4.94 3.96
1.15 0.80-1.67 1.17 0.82-1.67 1.18 0.81-1.73

Intensity of pain alleviation 27.46 28.31
1.11 0.88-1.40 0.97 0.77-1.22 1.13 0.88-1.47

Medication to hasten death 0.33 0.96
0.44 0.15-1.28 0.35 0.12-0.99 0.43 0.15-1.27

None of the above 24.00 22.95
1.44 1.08-1.71 1.09 0.87-1.36 1.39 1.09-1.78
Patient gender


.134






Men 52.43 50.01


1
1

Women 47.57 49.99


1.00 0.87-1.15 1.03 0.89-1.19
Patient age


.001






18-49 5.43 5.06


1
1

50-69 21.93 17.43


1.21 0.86-1.15 1.23 0.87-1.75

70-79 21.86 19.24


1.08 0.77-1.52 1.19 0.84-1.70

80-89 37.00 39.22


0.86 0.62-1.19 1.06 0.75-1.50

90+ 13.78 19.05


0.67 0.46-0.96 0.90 0.61-1.33
Place of death


.001






Hospital 64.10 56.52


1
1

Home 21.07 24.00


0.76 0.64-0.92 1.04 0.81-1.36

Nursing/retirement home 12.03 16.69


0.73 0.58-0.90 1.02 0.78-1.32

Other 2.80 2.79


0.87 0.56-1.32 1.20 0.75-1.91
Cause of patient death


.033






Cancer 25.19 28.45 .019

1
1

Cardiovascular disease 24.49 24.32 .900

1.41 1.14-1.74 1.11 0.88-1.39

Neurological disease 13.91 14.90 .362

1.31 1.04-1.65 1.08 0.84-1.38

Infectious disease 8.80 6.28 .003

1.78 1.35-2.34 1.32 0.98-1.77

Respiratory disease 6.76 6.52 .729

1.39 1.04-1.86 1.12 0.82-1.53

Digestive disease 5.00 4.03 .113

1.42 1.00-2.00 1.18 0.82-1.71

Mental health 3.01 3.12 .819

1.46 0.96-2.22 1.35 0.87-2.09

Violent death 3.07 3.59 .417

1.03 0.67-1.58 0.80 0.51-1.27

Other 9.77 8.78 .300

1.56 1.19-2.06 1.35 0.87-2.09