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Table 5 Crude and adjusted multinomial logistic regression models with TSH-measurement frequency and ultrasound frequency within 1 year prior to SHIP examination as outcome variables in all participants and only participants with billing diagnosis and/or medication (weighted)

From: Frequency of thyroid function tests and examinations in participants of a population-based study

DeterminantsTSH measurement during 1 year prior to SHIP examination
All participants
N = 5552
Participants with a billing code and/ or medication
n = 1409
Crude
OR (95% CI)
Adjusted
OR (95% CI)
Crude
OR (95% CI)
Adjusted
OR (95% CI)
1 TSH> 1 TSH1 TSH> 1 TSH1 TSH> 1 TSH1 TSH> 1 TSH
Medication2.88
(2.44–3.39)
8.66
(7.23–10.37)
2.32
(1.96–2.76)
6.29
(5.19–7.61)
1.65
(1.35–2.02)
2.64
(2.11–3.29)
1.66
(1.34–2.04)
2.48
(1.98–3.11)
Sex (female)1.29
(1.16–1.44)
2.21
(1.88–2.59)
1.29
(1.15–1.44)
1.83
(1.53–2.18)
0.94
(0.76–1.17)
1.45
(1.13–1.86)
0.93
(0.74–1.16)
1.36
(1.04–1.76)
Age (continuous)1.03
(1.03–1.04)
1.04
(1.03–1.04)
1.03
(1.02–1.03)
1.02
(1.01–1.03)
1.02
(1.01–1.03)
1.01
(1.00–1.02)
1.02
(1.01–1.03)
1.00
(0.99–1.02)
CCIa1.22
(1.17–1.26)
1.37
(1.31–1.43)
1.08
(1.04–1.13)
1.26
(1.19–1.32)
1.05
(0.98–1.13)
1.16
(1.09–1.24)
0.99
(0.92–1.06)
1.15
(1.06–1.23)
 Thyroid ultrasound during 1 year prior to SHIP examination
 All participants
N = 5552
Participants with a billing code and/or medication
n = 1409
Crude
OR (95% CI)
Adjusted
OR (95% CI)
Crude
OR (95% CI)
Adjusted
OR (95% CI)
1 ultrasound> 1 ultrasound1 Ultrasound> 1 Ultrasound1 Ultrasound> 1 Ultrasound1 Ultrasound> 1 Ultrasound
Medication5.39
(4.39–6.63)
8.48
(5.65–12.73)
4.24
(3.41–5.29)
6.79
(4.41–10.48)
1.11
(0.89–1.39)
1.35
(0.88–2.06)
1.14
(0.90–1.44)
1.35
(0.88–2.08)
Sex (female)2.02
(1.65–2.47)
4.93
(2.89–8.39)
1.58
(1.27–1.96)
3.20
(1.84–5.54)
0.92
(0.72–1.18)
2.03
(1.16–3.58)
0.88
(0.67–1.13)
1.66
(0.93–2.96)
Age (continuous)1.02
(1.01–1.03)
1.00
(0.98–1.02)
1.02
(1.01–1.02)
1.00
(0.98–1.02)
0.99
(0.98–1.00)
0.97
(0.96–0.99)
0.99
(0.98–1.01)
0.98
(0.97–1.01)
CCIa1.12
(1.06–1.18)
0.86
(0.72–1.02)
1.03
(0.96–1.09)
0.81
(0.67–0.98)
0.98
(0.91–1.06)
0.69
(0.56–0.85)
0.99
(0.91–1.07)
0.75
(0.61–0.94)
  1. aCCI Charlson-Comorbidity-Index, significant results have been marked in boldface type