Table 3

Predictors of loss to follow-up (LTFU) among diabetic patients* (n = 3,953) by logistic regression analysis

Factors

LTFU cases/patients, (%)

OR

95% CI

P value

aOR†

95% CI

P value

Sex (n = 3,953):

Male

430/1,332 (32.3)

1.0

1.0

Female

731/2,621 (27.9)

0.81

0.70 to 0.94

0.004

0.79

0.67 to 0.93

0.005

Age, years (n = 3952):

≥39

118/384 (30.7)

1.0

1.0

40 to 49

242/1,056 (22.9)

0.67

0.52 to 0.87

0.003

0.72

0.54 to 0.98

0.034

50 to 59

389/1,395 (27.9)

0.87

0.68 to 1.11

0.27

1.02

0.77 to 1.36

0.878

≥60

412/1,117 (36.9)

1.32

1.02 to 1.69

0.03

1.54

1.15 to 2.05

0.004

Type of diabetes

(n = 3953):

Type 1

20/42 (47.6)

1.0

1.0

Type 2

1,141/3,911 (29.2)

0.45

0.25 to 0.83

0.01

0.50

0.25 to 1.01

0.053

Origin (n = 3952):

District of clinic

460/1,641 (28.0)

1.0

1.0

Other districts

391/1,473 (26.5)

0.93

0.79 to 1.09

0.35

1.01

0.84 to 1.21

0.88

Outside province

310/838 (37.0)

1.51

1.26 to 1.80

<0.001

1.68

1.38 to 2.06

<0.001

Last BMI, kg/m², (n = 3901):

<23.0

581/1,708 (34.0)

1.0

1.0

≥23.0

547/2,193 (24.9)

0.64

0.56 to 0.74

<0.001

0.70

0.60 to 0.82

<0.001

Last RBG, mg/dl (n = 3659):

<180

330/1,688 (19.6)

1.0

1.0

≥180

621/1,971 (31.5)

1.89

1.62 to 2.21

<0.001

1.81

1.54 to 2.13

<0.001

Last consultation (n = 3927):

Not late

686/2,960 (23.2)

1.0

1.0

Late

474/967 (49.0)

3.19

2.74 to 3.71

<0.001

2.72

2.29 to 3.24

<0.001

*Included are all patients who initiated treatment between March 2002 and February 2008 and who attended at least two consultations.

†All factors with P value < 0.05 in univariate analysis were included in the multivariable regression model. P value for the likelihood ratio test for the model was <0.001.

aOR = adjusted odds ratio; BMI = body mass index; CI = confidence interval; OR = odds ratio; RBG = random blood glucose.

Raguenaud et al. BMC Medicine 2009 7:33   doi:10.1186/1741-7015-7-33