The DOI matches its Crossref record; 47 of the 47 references it cites were found in a registry or an index.
The incidence of thyroid disorders in the community: a twenty-year follow-up of the Whickham Survey
Abstract
BACKGROUND AND OBJECTIVE: The original Whickham Survey documented the prevalence of thyroid disorders in a randomly selected sample of 2779 adults which matched the population of Great Britain in age, sex and social class. The aim of the twenty-year follow-up survey was to determine the incidence and natural history of thyroid disease in this cohort. DESIGN, PATIENTS AND MEASUREMENTS: Subjects were traced at follow-up via the Electoral Register, General Practice registers, Gateshead Family Health Services Authority register and Office of Population Censuses and Surveys. Eight hundred and twenty-five subjects (30% of the sample) had died and, in addition to death certificates, two-thirds had information from either hospital/General Practitioner notes or post-mortem reports to document morbidity prior to death. Of the 1877 known survivors, 96% participated in the follow-up study and 91% were tested for clinical, biochemical and immunological evidence of thyroid dysfunction. RESULTS: Outcomes in terms of morbidity and mortality were determined for over 97% of the original sample. The mean incidence (with 95% confidence intervals) of spontaneous hypothyroidism in women was 3.5/1000 survivors/year (2.8-4.5) rising to 4.1/1000 survivors/year (3.3-5.0) for all causes of hypothyroidism and in men was 0.6/1000 survivors/year (0.3-1.2). The mean incidence of hyperthyroidism in women was 0.8/1000 survivors/year (0.5-1.4) and was negligible in men. Similar incidence rates were calculated for the deceased subjects. An estimate of the probability of the development of hypothyroidism and hyperthyroidism at a particular time, i.e. the hazard rate, showed an increase with age in hypothyroidism but no age relation in hyperthyroidism. The frequency of goitre decreased with age with 10% of women and 2% of men having a goitre at follow-up, as compared to 23% and 5% in the same subjects respectively at the first survey. The presence of a goitre at either survey was not associated with any clinical or biochemical evidence of thyroid dysfunction. In women, an association was found between the development of a goitre and thyroid-antibody status at follow-up, but not initially. The risk of having developed hypothyroidism at follow-up was examined with respect to risk factors identified at first survey. The odds ratios (with 95% confidence intervals) of developing hypothyroidism with (a) raised serum TSH alone were 8 (3-20) for women and 44 (19-104) for men; (b) positive anti-thyroid antibodies alone were 8 (5-15) for women and 25 (10-63) for men; (c) both raised serum TSH and positive anti-thyroid antibodies were 38 (22-65) for women and 173 (81-370) for men. A logit model indicated that increasing values of serum TSH above 2mU/l at first survey increased the probability of developing hypothyroidism which was further increased in the presence of anti-thyroid antibodies. Neither a positive family history of any form of thyroid disease nor parity of women at first survey was associated with increased risk of developing hypothyroidism. Fasting cholesterol and triglyceride levels at first survey when corrected for age showed no association with the development of hypothyroidism in women. CONCLUSIONS: This historical cohort study has provided incidence data for thyroid disease over a twenty-year period for a representative cross-sectional sample of the population, and has allowed the determination of the importance of prognostic risk factors for thyroid disease identified twenty years earlier.
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In the citing paper
“Hypothyroidism (subclinical and overt) is approximately 10-times more common in women than men, 31”
From Hypothyroidism (2024) · cites this paper as [31]
In the citing paper
“In iodine-sufficient countries, the prevalence of overt hypothyroidism is approximately 1-2%.3,31- 33”
From Hypothyroidism (2024) · cites this paper as [31]
In the citing paper
“Longitudinal data from the UK suggest an incidence rate of spontaneous hypothyroidism of 3•5-5•0 per 1000 women and 0•6-1•0 per 1000 men.31,38”
From Hypothyroidism (2024) · cites this paper as [31]
In the citing paper
“around 5% will progress to overt hypothyroidism annually, if serum thyroid peroxidase antibodies (TPOAb) are positive. 13”
From Use of liothyronine (T3) in hypothyroidism: Joint British Thyroid Association/Society for endocrinology consensus statement (2023) · cites this paper as [13]
In the citing paper
“Subclinical hypothyroidism affects 5% -10% of the population”
From Use of liothyronine (T3) in hypothyroidism: Joint British Thyroid Association/Society for endocrinology consensus statement (2023) · cites this paper as [13]
In the citing paper
“If TPOAb are negative, the rate of progression to overt disease is around 3% per year. 13”
From Use of liothyronine (T3) in hypothyroidism: Joint British Thyroid Association/Society for endocrinology consensus statement (2023) · cites this paper as [13]
In the citing paper
“It can progress to overt hypothyroidism, particularly if antithyroid antibody positive.10”
From Management of primary hypothyroidism: statement by the British Thyroid Association Executive Committee (2016) · cites this paper as [10]
Citations
Cites
THE SPECTRUM OF THYROID DISEASE IN A COMMUNITY: THE WHICKHAM SURVEY
Tunbridge, W. M. G., Evered, D. C., Hall, R., Appleton, D. R., BREWIS, M., CLARK, F., Evans, J. G., Young, E. T., Bird, T., & Smith, P. (1977) · Clinical Endocrinology · doi:10.1111/j.1365-2265.1977.tb01340.x · Cited by 2,665
Self-citationInternational Classification of Diseases, 10th Revision
Tassé, M. J., & Bush, K. (2018) · Sage eBooks · doi:10.4135/9781483392271.n276 · Cited by 1,921
Fade, J. V., Franklyn, J. A., Cross, K. W., Jones, S. C., & Sheppard, M. C. (1991) · Clinical Endocrinology · doi:10.1111/j.1365-2265.1991.tb01739.x · Cited by 567
International Classification of Diseases, 10th Revision
(2011) · The Health Care Manager · doi:10.1097/hcm.0b013e31823b60fa · Cited by 513
Thyroid gland: US screening in a random adult population.
Brander, A., Viikinkoski, P., Nickels, J., et al. (1991) · Radiology · doi:10.1148/radiology.181.3.1947082 · Cited by 500
Confidence intervals for a binomial proportion
Vollset, S. E. (1993) · Statistics in Medicine · doi:10.1002/sim.4780120902 · Cited by 481
Two Simple Methods for Measuring Iodine in Urine
Dunn, J. T., CRUTCHFIELD, H. E., Gutekunst, R., et al. (1993) · Thyroid · doi:10.1089/thy.1993.3.119 · Cited by 352
Werner and Ingbar's The Thyroid: A Fundamental and Clinical Text
(1992) · Annals of Internal Medicine · doi:10.7326/0003-4819-117-6-541_8 · Cited by 302
Natural history of autoimmune thyroiditis.
Tunbridge, W. M. G., BREWIS, M., French, J. M., Appleton, D. R., Bird, T., CLARK, F., Evered, D. C., Evans, J. G., Hall, R., Smith, P., et al. (1981) · BMJ · doi:10.1136/bmj.282.6260.258 · Cited by 269
Self-citationRallison, M. L., DOBYNS, B. M., Meikle, A. W., Bishop, M., Lyon, J. L., & Stevens, W. (1991) · The American Journal of Medicine · doi:10.1016/0002-9343(91)90153-o · Cited by 203
Research works printed but not linked: 4
- MacLennan R., 1969, Observer variation in grading and measuring the thyroid in epidemiological surveys, Pan American Health Organisation Scientific Publication, 193, 67
- Office of Population Censuses and Surveys, 1993, 1991 Census. Sex, Age and Marital Status: Great Britain
- Querido A., 1974, Definitions of endemic goitre and cretinism, classification of goitre size and severity of endemias, and survey techniques, Pan American Health Organisation Scientific Publication, 292, 267
- Tunbridge W.M.G., 1991, Werner and Ingbar's The Thyroid: A Fundamental and Clinical Text, 578
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Items 101–155 of 155
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Is subclinical hypothyroidism a cardiovascular risk factor in the elderly?
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Muller, I., Moran, C., Lecumberri, B., Decallonne, B., Robertson, N., Jones, J., & Dayan, C. M. (2019) · European Thyroid Journal · doi:10.1159/000500881 · Cited by 78
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Chadda, K. R., Ajijola, O. A., Vaseghi, M., Shivkumar, K., Huang, C. L.-H., & Jeevaratnam, K. (2018) · Ageing Research Reviews · doi:10.1016/j.arr.2018.09.005 · Cited by 77
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Fifteen-year follow-up of thyroid function in lithium patients
Bocchetta, A., Cocco, F., Velluzzi, F., Del Zompo, M., Mariotti, S., & Loviselli, A. (2007) · Journal of Endocrinological Investigation · doi:10.1007/bf03346311 · Cited by 76
Ahmed, S., Van Gelder, I. C., Wiesfeld, A. C. P., Van Veldhuisen, D. J., & Links, T. P. (2011) · Clinical Endocrinology · doi:10.1111/j.1365-2265.2011.04087.x · Cited by 72
Thyroid autoimmunity and aging
Mariotti, S., Chiovato, L., Franceschi, C., & Pinchera, A. (1998) · Experimental Gerontology · doi:10.1016/s0531-5565(98)00030-8 · Cited by 73
Collet, T.-H., Bauer, D. C., Cappola, A. R., Åsvold, B. O., Weiler, S., Vittinghoff, E., Gussekloo, J., Bremner, A., den Elzen, W. P. J., Maciel, R. M. B., et al. (2014) · The Journal of Clinical Endocrinology & Metabolism · doi:10.1210/jc.2014-1250 · Cited by 71
Self-citationThyroxine replacement: a clinical endocrinologist’s viewpoint
Eligar, V, Taylor, P., Okosieme, O., Leese, G., & Dayan, C. (2016) · Annals of Clinical Biochemistry: International Journal of Laboratory Medicine · doi:10.1177/0004563216642255 · Cited by 72
Effect of seasonal changes on the transition between subclinical hypothyroid and euthyroid status
Kim, T. H., Kim, K. W., Ahn, H. Y., Choi, H. S., Won, H., Choi, Y., Cho, S. W., Moon, J. H., Yi, K. H., Park, D. J., et al. (2013) · The Journal of Clinical Endocrinology & Metabolism · doi:10.1210/jc.2013-1607 · Cited by 70
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Valizadeh, M., Seyyed-Majidi, M. R., Hajibeigloo, H., Momtazi, S., Musavinasab, N., & Hayatbakhsh, M. R. (2009) · Endocrine Research · doi:10.1080/07435800903156340 · Cited by 65
Whose normal thyroid function is better—yours or mine?
Dayan, C. M., Saravanan, P., & Bayly, G. (2002) · The Lancet · doi:10.1016/s0140-6736(02)09602-2 · Cited by 61
Serum thyrotrophin at baseline predicts the natural course of subclinical hyperthyroidism
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Andrade, V. A., Gross, J. L., & Maia, A. L. (1999) · The Journal of Clinical Endocrinology & Metabolism · doi:10.1210/jcem.84.11.6149 · Cited by 53
Biochemical Testing in Thyroid Disorders
Esfandiari, N. H., & Papaleontiou, M. (2017) · Endocrinology and Metabolism Clinics of North America · doi:10.1016/j.ecl.2017.04.002 · Cited by 50
Rajput, R., Chatterjee, S., & Rajput, M. (2011) · Journal of Thyroid Research · doi:10.4061/2011/505239 · Cited by 52
Vaisman (2014) · PubMed · doi:10.3275/8810 · Cited by 49
Central hypothyroidism and its role for cardiovascular risk factors in hypopituitary patients
Feldt-Rasmussen, U., & Klose, M. (2016) · Endocrine · doi:10.1007/s12020-016-1047-x · Cited by 43
Vita, R., Di Bari, F., & Benvenga, S. (2017) · Expert Opinion on Drug Delivery · doi:10.1080/17425247.2017.1290604 · Cited by 43
Papi, G., Pearce, E. N., Braverman, L. E., Betterle, C., & Roti, E. (2005) · The American Journal of Medicine · doi:10.1016/j.amjmed.2005.01.004 · Cited by 39
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Buscemi, S., Verga, S., Cottone, S., Andronico, G., D’Orio, L., Mannino, V., Panzavecchia, D., Vitale, F., & Cerasola, G. (2007) · Journal of Endocrinological Investigation · doi:10.1007/bf03347430 · Cited by 35
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“13 If TPOAb are negative, the rate of progression to overt disease is around 3% per year.”
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Goede, S. L., Leow, M. K.-S., Smit, J. W. A., Klein, H. H., & Dietrich, J. W. (2014) · Bulletin of Mathematical Biology · doi:10.1007/s11538-014-9955-5 · Cited by 30
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Khoshi, A., Sirghani, A., Ghazisaeedi, M., Mahmudabadi, A. Z., & Azimian, A. (2017) · Hormones · doi:10.14310/horm.2002.1721 · Cited by 17
den Elzen, W. P., Lefèbre-van de Fliert, A. A., Virgini, V., Mooijaart, S. P., Frey, P., Kearney, P. M., Kerse, N., Mallen, C. D., McCarthy, V. J., Muth, C., et al. (2015) · British Journal of General Practice · doi:10.3399/bjgp15x683569 · Cited by 18
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Description of thyroid disorders the year before conception: a population-based study.
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Metadata
- Authors
- Vanderpump, M. P. J., Tunbrldge, W. M. G., French, J. M., Appleton, D., Bates, D., Clark, F., Evans, J. G., Hasan, D. M., Rodgers, H., Tunbridge, F., & Young, E. T.
- Affiliations
- Newcastle University (GB)
- University of Oxford (GB)
- Freeman Hospital (GB)
- Wansbeck General Hospital (GB)
- Corresponding author
- Vanderpump, M. P. J.
- Venue
- Clinical Endocrinology
- Publisher
- Wiley
- Published
- 1995-07
- Volume
- 43
- Issue
- 1
- Pages
- 55-68
- ISSN
- 0300-0664 (ISSN-L)
- 1365-2265
- OpenAlex
- W2133547068
- Cited by
- 2,432
- References
- 47
- Citations by year
- 2026: 41 · 2025: 59 · 2024: 66 · 2023: 70 · 2022: 113 · 2021: 80 · 2020: 124 · 2019: 102 · 2018: 98 · 2017: 120 · 2016: 104 · 2015: 102 · 2014: 108 · 2013: 118 · 2012: 116
- FWCI
- 15.68
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Clinical Endocrinology (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Novo Nordisk
- Topics
- Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Thyroid Disorders and Treatments
- Health Sciences › Medicine › Surgery › Thyroid and Parathyroid Surgery
- Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Thyroid Cancer Diagnosis and Treatment
- Keywords
- thyroid disease incidence, hypothyroidism, hyperthyroidism, goiter, thyroid autoantibodies, hazard function, age-related risk, sex differences, community-based cohort, mortality, thyroid dysfunction screening, iodine deficiency, iodized salt, iodine supplementation, goitre treatment
- MeSH terms
- Adult, Aged, Aged, 80 and over, Autoantibodies, England, Female, Follow-Up Studies, Goiter, Humans, Hyperthyroidism, Hypothyroidism, Male, Middle Aged, Morbidity, Risk Factors, Thyroid Diseases, Thyroid Gland, Thyrotropin, Incidence, Age Distribution, Sex Distribution
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