M. Halldórsson - Academia.edu (original) (raw)

Papers by M. Halldórsson

Scandinavian journal of public health, 1999

To assess differences in health, healthcare use and well-being of children according to their soc... more To assess differences in health, healthcare use and well-being of children according to their socioeconomic situation. Part of a larger cross-sectional survey on health and well-being of children and their parents in the Nordic countries. Iceland. A questionnaire was sent to the parents of a nationally representative sample of 3,007 school children aged two to seventeen years. The SES indicators used were education and occupation of both parents and the disposable income of the family. Logistic regression models were used for the analysis. Children of lower SES were found to have worse health and well-being than those of higher SES. Children of lower SES appeared to use doctor's services to the same degree as children of higher SES, especially after differences in ill health were taken into account. The association between SES and health status and well-being in adulthood can already be detected in childhood, even in an egalitarian country with a homogeneous population.

LAEKNAblaðið 2009/95 11 Ágrip Markmið: Að meta algengi geðlyfjanotkunar aldraðra sem bjuggu utan ... more LAEKNAblaðið 2009/95 11 Ágrip Markmið: Að meta algengi geðlyfjanotkunar aldraðra sem bjuggu utan stofnana árið 2006. Efniviður og aðferðir: Lýsandi áhorfsrannsókn sem byggði á gögnum úr lyfjagagnagrunni Landlaeknisembaettisins. Þýðið var Íslendingar 70 ára og eldri sem bjuggu utan stofnana (8,6% af heildarmannfjölda). Algengi þunglyndis-, geðrofs-, kvíðastillandi-og svefnlyfjanotkunar (ATCflokkar N06A, N05A, N05B, N05C) var skilgreint sem fjöldi einstaklinga á hverja 100 íbúa sem leysti út eina eða fleiri lyfjaávísun á tiltekin lyf árið 2006. Niðurstöður voru bornar saman við upplýsingar úr lyfjagagnagrunni um geðlyfjanotkun Dana á aldrinum 70 til 74 ára. Niðurstöður: Einstaklingar 70 ára og eldri leystu út þriðjung allra lyfjaávísana á Íslandi árið 2006, þar af var fjórðungur á geðlyf. Eldri konur voru líklegri en karlar til að nota geðlyf (RR=1,40 95% CI: 1,37-1,43). Algengi geðlyfjanotkunar í þýðinu var 65,5% fyrir konur og 46,8% fyrir karla. Algengust var notkun kvíðastillandi lyfja og svefnlyfja (N05B eða N05C), 58,5% meðal kvenna og 40,3% meðal karla. Algengi þunglyndislyfjanotkunar var 28,8% meðal kvenna og 18,4% meðal karla. Um 5% þýðisins notaði geðrofslyf. Algengi geðlyfjanotkunar meðal 70-74 ára var 1,5 til 2,5 falt haerra á Íslandi en Danmörku. Ályktun: Geðlyfjanotkun eldri Íslendinga er almenn, einkum í flokkum kvíðastillandi-og svefnlyfja. Samanborið við upplýsingar úr dönskum lyfjagagnagrunni fyrir aldurshópinn 70-74 ára er ávísun á geðlyf algengari á Íslandi. LAEKNAblaðið 2009/95 17 Samuelsson O, Zoëga H, Gudmundsson A, Halldorsson M. Prevalence of psychotropic drug use among elderly icelanders living at home. icel Med J 2009; 95: 11-17.

Acta Psychiatrica Scandinavica, 2011

International Journal of Clinical Practice, 2015

Background: Primary non-adherence occurs when a drug has been prescribed but the patient fails to... more Background: Primary non-adherence occurs when a drug has been prescribed but the patient fails to have it dispensed at the pharmacy. Aims: To assess primary non-adherence to statins and antidepressants in Iceland, the association of demographic factors with primary non-adherence, and the time from when a prescription is issued until it is dispensed. Methods: Data on patients receiving a new prescription for a statin or an antidepressant from the Primary Health Care database were linked with dispensing histories from The Icelandic Prescription Database. The proportion of patients who did not have their prescription dispensed within a year from issuing (primary non-adherent) was assessed, as well as the time from issue until dispensing. Associations between demographic factors and primary non-adherence were estimated using logistic regression. Results: The overall primary non-adherence was 6.3% and 8.0% for statins and antidepressants, respectively. The majority of patients had their prescription dispensed within 7 days (85% for statins, 87% for antidepressants). Being disabled and receiving a prescription for an expensive drug was associated with higher rates of primary non-adherence. Conclusion: The rate of primary non-adherence to statins and antidepressants in Iceland is low. Vulnerable groups such as the disabled should be given special attention when new drugs are prescribed.

Primary non-adherence occurs when a drug has been prescribed but the patient fails to have it dis... more Primary non-adherence occurs when a drug has been prescribed but the patient fails to have it dispensed at the pharmacy. To assess primary non-adherence to statins and antidepressants in Iceland, the association of demographic factors with primary non-adherence, and the time from when a prescription is issued until it is dispensed. Data on patients receiving a new prescription for a statin or an antidepressant from the Primary Health Care database were linked with dispensing histories from The Icelandic Prescription Database. The proportion of patients who did not have their prescription dispensed within a year from issuing (primary non-adherent) was assessed, as well as the time from issue until dispensing. Associations between demographic factors and primary non-adherence were estimated using logistic regression. The overall primary non-adherence was 6.3% and 8.0% for statins and antidepressants, respectively. The majority of patients had their prescription dispensed within 7 days (85% for statins, 87% for antidepressants). Being disabled and receiving a prescription for an expensive drug was associated with higher rates of primary non-adherence. The rate of primary non-adherence to statins and antidepressants in Iceland is low. Vulnerable groups such as the disabled should be given special attention when new drugs are prescribed.

Scandinavian journal of public health, 1999

To assess differences in health, healthcare use and well-being of children according to their soc... more To assess differences in health, healthcare use and well-being of children according to their socioeconomic situation. Part of a larger cross-sectional survey on health and well-being of children and their parents in the Nordic countries. Iceland. A questionnaire was sent to the parents of a nationally representative sample of 3,007 school children aged two to seventeen years. The SES indicators used were education and occupation of both parents and the disposable income of the family. Logistic regression models were used for the analysis. Children of lower SES were found to have worse health and well-being than those of higher SES. Children of lower SES appeared to use doctor's services to the same degree as children of higher SES, especially after differences in ill health were taken into account. The association between SES and health status and well-being in adulthood can already be detected in childhood, even in an egalitarian country with a homogeneous population.

LAEKNAblaðið 2009/95 11 Ágrip Markmið: Að meta algengi geðlyfjanotkunar aldraðra sem bjuggu utan ... more LAEKNAblaðið 2009/95 11 Ágrip Markmið: Að meta algengi geðlyfjanotkunar aldraðra sem bjuggu utan stofnana árið 2006. Efniviður og aðferðir: Lýsandi áhorfsrannsókn sem byggði á gögnum úr lyfjagagnagrunni Landlaeknisembaettisins. Þýðið var Íslendingar 70 ára og eldri sem bjuggu utan stofnana (8,6% af heildarmannfjölda). Algengi þunglyndis-, geðrofs-, kvíðastillandi-og svefnlyfjanotkunar (ATCflokkar N06A, N05A, N05B, N05C) var skilgreint sem fjöldi einstaklinga á hverja 100 íbúa sem leysti út eina eða fleiri lyfjaávísun á tiltekin lyf árið 2006. Niðurstöður voru bornar saman við upplýsingar úr lyfjagagnagrunni um geðlyfjanotkun Dana á aldrinum 70 til 74 ára. Niðurstöður: Einstaklingar 70 ára og eldri leystu út þriðjung allra lyfjaávísana á Íslandi árið 2006, þar af var fjórðungur á geðlyf. Eldri konur voru líklegri en karlar til að nota geðlyf (RR=1,40 95% CI: 1,37-1,43). Algengi geðlyfjanotkunar í þýðinu var 65,5% fyrir konur og 46,8% fyrir karla. Algengust var notkun kvíðastillandi lyfja og svefnlyfja (N05B eða N05C), 58,5% meðal kvenna og 40,3% meðal karla. Algengi þunglyndislyfjanotkunar var 28,8% meðal kvenna og 18,4% meðal karla. Um 5% þýðisins notaði geðrofslyf. Algengi geðlyfjanotkunar meðal 70-74 ára var 1,5 til 2,5 falt haerra á Íslandi en Danmörku. Ályktun: Geðlyfjanotkun eldri Íslendinga er almenn, einkum í flokkum kvíðastillandi-og svefnlyfja. Samanborið við upplýsingar úr dönskum lyfjagagnagrunni fyrir aldurshópinn 70-74 ára er ávísun á geðlyf algengari á Íslandi. LAEKNAblaðið 2009/95 17 Samuelsson O, Zoëga H, Gudmundsson A, Halldorsson M. Prevalence of psychotropic drug use among elderly icelanders living at home. icel Med J 2009; 95: 11-17.

Acta Psychiatrica Scandinavica, 2011

International Journal of Clinical Practice, 2015

Background: Primary non-adherence occurs when a drug has been prescribed but the patient fails to... more Background: Primary non-adherence occurs when a drug has been prescribed but the patient fails to have it dispensed at the pharmacy. Aims: To assess primary non-adherence to statins and antidepressants in Iceland, the association of demographic factors with primary non-adherence, and the time from when a prescription is issued until it is dispensed. Methods: Data on patients receiving a new prescription for a statin or an antidepressant from the Primary Health Care database were linked with dispensing histories from The Icelandic Prescription Database. The proportion of patients who did not have their prescription dispensed within a year from issuing (primary non-adherent) was assessed, as well as the time from issue until dispensing. Associations between demographic factors and primary non-adherence were estimated using logistic regression. Results: The overall primary non-adherence was 6.3% and 8.0% for statins and antidepressants, respectively. The majority of patients had their prescription dispensed within 7 days (85% for statins, 87% for antidepressants). Being disabled and receiving a prescription for an expensive drug was associated with higher rates of primary non-adherence. Conclusion: The rate of primary non-adherence to statins and antidepressants in Iceland is low. Vulnerable groups such as the disabled should be given special attention when new drugs are prescribed.

Primary non-adherence occurs when a drug has been prescribed but the patient fails to have it dis... more Primary non-adherence occurs when a drug has been prescribed but the patient fails to have it dispensed at the pharmacy. To assess primary non-adherence to statins and antidepressants in Iceland, the association of demographic factors with primary non-adherence, and the time from when a prescription is issued until it is dispensed. Data on patients receiving a new prescription for a statin or an antidepressant from the Primary Health Care database were linked with dispensing histories from The Icelandic Prescription Database. The proportion of patients who did not have their prescription dispensed within a year from issuing (primary non-adherent) was assessed, as well as the time from issue until dispensing. Associations between demographic factors and primary non-adherence were estimated using logistic regression. The overall primary non-adherence was 6.3% and 8.0% for statins and antidepressants, respectively. The majority of patients had their prescription dispensed within 7 days (85% for statins, 87% for antidepressants). Being disabled and receiving a prescription for an expensive drug was associated with higher rates of primary non-adherence. The rate of primary non-adherence to statins and antidepressants in Iceland is low. Vulnerable groups such as the disabled should be given special attention when new drugs are prescribed.