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Table 3 Stratified analysis of factors by key departments

From: Predictors of failed attendances in a multi-specialty outpatient centre using electronic databases

Variable

Surgical (n = 7961)

Medical (n = 6848)

ENT (n = 1935)

Ophthalmology (n = 3721)

Therapy (n = 613)

Others (n = 574)

Age group

      

   Up to 20 years

1

1

1

1

1

1

   21 to 30 years

0.77*

0.99

0.88

1.36

1.12

0.87

   31 to 40 years

0.85

0.81

0.76

1.25

1.12

1.23

   41 to 50 years

0.71*

0.7*

0.52*

0.87

0.88

0.81

   51 to 60 years

0.71*

0.66*

0.49*

0.62*

0.6

0.42

   More than 60 years

0.89

0.69*

0.86

1.1

0.62

0.79

Race

      

   Chinese

1

1

1

1

1

1

   Malay

1.69*

1.53*

1.26

1.35

0.98

0.91

   Indian

1.44*

1.67*

1.53

1.85*

1.11

5.28*

   Others

1.01

0.95

1.19

1.17

0.85

0.7

Days from scheduling to actual appointment

      

   Up to 7 days

1

1

1

1

1

1

   7 to 21 days

1.46*

1.36*

1.1

0.95

2.07*

0.78

   More than 21 days

2.77*

2.7*

2.28*

1.99*

0.64

2.8*

Percentage of previous failed appointments

      

   Up to 20%

1

1

1

1

1

1

   21% to 40%

0.7*

1.37*

0.49*

0.97

1.24

1.18

   41% to 60%

0.86

1.7*

1.06

1.21

1.98*

1.06

   More than 60%

1.26*

3.1*

1.39

1.41*

1.59

3.25*

   No previous appointment

3.84*

5.96*

4.07*

3.24*

1.86

4.37*

Provided cell phone number

0.07*

0.1*

0.06*

0.17*

0.15*

0.15*

Approximate distance from TTSH

      

   <6 km

1

1

1

1

1

1

   6 to 14 km

1.04

1.06

0.81

1.07

1.02

1.07

   >14 km

1.13

1.12

0.86

1.34*

0.98

1.46

  1. Numbers presented within the table represent adjusted odds ratios. The baseline comparison group has an odds ratio of 1 and is italicised. Odds ratios significant at a level of p < 0.05 are indicated with an asterisk "*".