Table 2

 Baseline characteristics of study cohort by thyroid status. Values are numbers (percentages) unless stated otherwise

CharacteristicThyroid statusTotal population (n=586 460)
Overt hypothyroidism (n=1670)Subclinical hypothyroidism (n=12 087)Euthyroidism (n=562 461)Subclinical hyperthyroidism (n=6276)Overt hyperthyroidism (n=3966)
Mean (SD) age (years):53.7 (18.1)54.5 (18.5)48.6 (18.2)60.6 (19.4)51.8 (19.4)48.9 (18.3)
 Women53.2 (18.4)54.7 (18.6)47.7 (19.0)60.3 (20.1)51.6 (19.8)48.1 (19.1)
  Men55.6 (16.6)53.5 (18.1)50.0 (16.8)61.5 (16.8)52.8 (17.4)50.2 (16.9)
Sex:
 Women1355 (81)9675 (80)336 520 (60)4784 (76)3171 (80)355 505 (61)
 Men315 (19)2412 (20)225 941 (40)1492 (24)795 (20)230 955 (39)
Mean (SD) thyroid function:
 TSH (mIU/L)63.77 (44.64)9.24 (7.24)1.56 (0.84)0.086 (0.061)0.038 (0.043)1.871 (4.428)
 FT4 (pmol/L)6.28 (1.93)13.11 (2.18)15.05 (2.30)16.89 (2.62)42.61 (22.28)15.94 (8.27)
Comorbidity:
 Peripheral vascular disease3 (0)19 (0)676 (0)17 (0)10 (0)725 (0)
 Cerebral vascular disease6 (0)78 (1)3024 (1)57 (1)25 (1)3190 (1)
 Ischaemic heart disease9 (1)59 (0)2652 (0)61 (1)19 (0)2800 (0)
 Malignancy 22 (1)72 (1)2552 (0)61 (1)26 (1)2733 (0)
 COPD8 (0)48 (0)1930 (0)61 (1)26 (1)2073 (0)
 Diabetes6 (0)39 (0)2381 (0)47 (1)19 (0)2492 (0)
 Rheumatic disease1 (0)9 (0)363 (0)13 (0)4 (0)390 (0)
 Chronic renal failure2 (0)7 (0)224 (0)6 (0)1 (0)240 (0)
 Gastric ulcer3 (0)22 (0)1187 (0)25 (0)16 (0)1253 (0)
 Congestive heart failure6 (0)35 (0)997 (0)32 (1)11 (0)1081 (0)
Charlson comorbidity index:
 01629 (97)11 929 (98)556 268 (98)6104 (96)3930 (97)579 860 (98)
 124 (1)179 (1)7418 (1)157 (2)73 (2)7842 (1)
 223 (1)89 (1)3037 (1)78 (1)28 (1)3255 (1)
 ≥36 (0)38 (0)1669 (0)34 (0)19 (0)1766 (0)
Yearly family income, by quintiles:
 0234 (14)2096 (18)103 987 (19)1320 (21)732 (19)108 369 (19)
 1384 (23)2741 (23)107 427 (19)1703 (28)930 (24)113 185 (20)
 2357 (22)2467 (21)111 809 (20)1267 (21)799 (21)116 669 (20)
 3352 (21)2336 (20)114 707 (21)1027 (17)765 (20)119 187 (21)
 4321 (19)2230 (19)115 735 (21)833 (14)662 (17)119 781 (21)

TSH=thyroid stimulating hormone, COPD=chronic obstructive pulmonary disease.