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Table 2 Multivariable logistic regression analysis of the 12 general opinion and payment issues questionnaire statements

From: Implant removal of osteosynthesis: the Dutch practice. Results of a survey

Statement #a

 n 

Factor

 Age 

 Gender 

 Background 

 Position 

 Affiliation 

 Employment 

1

243

1.00 (0.96;1.04)

1.27 (0.41;3.94)

 0.32 (0.16;0.66)  c

2.18 (0.84;5.66)

0.91 (0.49;1.70)

0.87 (0.41;1.84)

2 b

232

1.03 (0.99;1.08)

2.60 (0.53;12.71)

1.35 (0.65;2.82)

 439.82  c,d  (23.6;8211.3) 

1.53 (0.72;3.25)

0.99 (0.44;2.20)

3

198

1.01 (0.97;1.05)

1.86 (0.53;6.48)

0.76 (0.40;1.45)

2.38 (0.85;6.63)

1.27 (0.68;2.40)

0.92 (0.43;1.97)

4

241

0.99 (0.93;1.05)

1.81 (0.22;15.18)

0.65 (0.26;1.65)

0.92 (0.20;4.14)

0.50 (0.19;1.35)

0.54 (0.17;1.65)

5

226

1.02 (0.97;1.08)

2.56 (0.74;8.89)

0.40 (0.14;1.12)

1.85 (0.52;6.57)

1.07 (0.44;2.56)

1.98 (0.68;5.73)

6

238

1.00 (0.96;1.03)

1.65 (0.54;5.02)

1.75 (0.95;3.20)

0.88 (0.35;2.20)

0.62 (0.35;1.12)

0.57 (0.29;1.13)

7

238

1.01 (0.96;1.06)

0.93 (0.23;3.67)

0.81 (0.37;1.78)

0.51 (0.15;1.80)

0.52 (0.23;1.14)

1.27 (0.47;3.47)

8 b

201

1.01 (0.97;1.05)

10.31 (0.59;178.94)

0.90 (0.45;1.81)

1.24 (0.39;3.96)

1.60 (0.81;3.16)

1.34 (0.60;2.98)

9

238

0.96 (0.92;1.00)

1.78 (0.58;5.46)

0.89 (0.44;1.81)

0.59 (0.20;1.67)

0.93 (0.47;1.82)

0.79 (0.35;1.78)

10

233

0.98 (0.91;1.06)

0.93 (0.10;8.41)

1.12 (0.33;3.80)

1.84 (0.28;12.20)

0.35 (0.10;1.28)

0.30 (0.08;1.17)

11

240

1.02 (0.98;1.06)

2.79 (0.74;10.57)

0.53 (0.29;0.97)

0.92 (0.35;2.42)

0.84 (0.46;1.54)

1.07 (0.53;2.18)

12

241

0.97 (0.92;1.03)

1.14 (0.13;9.89)

1.01 (0.37;2.77)

1.06 (0.19;5.81)

1.25 (0.46;3.40)

0.89 (0.29;2.70)

  1. The tabulated numbers are odds ratios with their 95 % confidence intervals (in parentheses).
  2. a See Appendix 1 for details of the questionnaire statements.
  3. b Logistic regression estimation based on Firth’s penalised likelihood.
  4. c Significant odds ratio at p = 0.05.
  5. d Though the effect is huge because 100 % of the residents agreed to this statement, the ‘position’ perfectly predicts agreement to statement 2.