Table 3

Predictors of abnormal result

Baseline Characteristics
Odds ratio
95% confidence interval
P value

Male
0.81
(0.59, 1.13)
0.21
Autoimmune hypothyroidism
0.98
(0.79, 1.22)
0.86
*Age at registration:



< 25 yrs
0.96
(0.54, 1.70)
0.96
> 60 yrs
1.36
(1.07, 1.73)
0.01
+Thyroxine dose at registration



<100 μg
1.34
(0.86, 2.09)
0.18
>150 μg
1.36
(0.98, 1.90)
0.07
Thyroid FU plan



18 monthly interval
0.66
(0.53, 0.81)
<0.001

*Reference category: 25 to 60 years; +Reference category: 100 to 150 μg

Viswanath et al. BMC Endocrine Disorders 2007 7:4   doi:10.1186/1472-6823-7-4