Josta de Jong - Academia.edu (original) (raw)

Papers by Josta de Jong

Diabetes/metabolism research and reviews, Jan 2, 2015

Insulin analogues are commonly used in pregnant women with diabetes. It is not known if the use o... more Insulin analogues are commonly used in pregnant women with diabetes. It is not known if the use of insulin analogues in pregnancy is associated with any higher risk of congenital anomalies in the offspring compared with use of human insulin. We performed a literature search for studies of pregnant women with pregestational diabetes using insulin analogues in the first trimester and information on congenital anomalies. The studies were analyzed to compare the congenital anomaly rate among fetuses of mothers using insulin analogues with fetuses of mothers using human insulin. Of 29 studies we included 1286 fetuses of mothers using short-acting insulin analogues with 1089 references of mothers using human insulin and 768 fetuses of mothers using long-acting insulin analogues with 685 references of mothers using long-acting human insulin (Neutral Protamine Hagedorn; NPH). The congenital anomaly rate was 4.84% and 4.29% among the fetuses of mothers using lispro and aspart. For glargine a...

Pharmacoepidemiology and drug safety, 2011

To explore the possibility to detect adverse drug reactions (ADRs) from a pharmacy prescription d... more To explore the possibility to detect adverse drug reactions (ADRs) from a pharmacy prescription database by examining the use of proxy-drugs during the treatment. From a pharmacy prescription database we selected all children of 0-6 years old who started an antibiotic drug between 1999 and 2006. In the period of 5 days before till 12 days after the initiation of the antibiotic, we examined the number of prescriptions of 5 groups of proxy-drugs associated with adverse reactions: propulsives, skinmedication, antihistaminics, drugs against candidiasis and diarrhea. We did this also for cases where the children did not use any other drugs on the start day (t = 0) and the 5 days before, to focus on the use of proxy-drugs not related to the infection. A total of 105,804 antibiotic courses were selected. The use of the proxy-drugs was the highest at the first day with no significant increase in the days thereafter. In case of no use of any other drugs from day -5 till day 0 a significant i...

European Journal of Clinical Pharmacology, 2008

Objective Antibiotics are the most commonly prescribed drugs used by children. Excessive and irra... more Objective Antibiotics are the most commonly prescribed drugs used by children. Excessive and irrational use of antibiotic drugs is a world-wide concern. We performed a drug utilization study describing the patterns of antibiotic use in children aged 0-19 years between 1999 and 2005 in the Netherlands. Methods We used IADB.nl, a database with pharmacy drug dispensing data covering a population of 500,000 people and investigated all prescriptions of oral antibiotic drugs (ATC J01) for children ≤19 years between 1999 and 2005. Results The total number of antibiotic prescriptions per 1000 children per year ranged from 282 in 2004 to 307 in 2001 and did not change between years during the study period in a clinically relevant way. The prevalence of receiving at least one prescription varied between 17.8% in 2004 and 19.3% in 2001. Amoxicillin was the most frequently prescribed drug (46.4% of all antibiotic prescriptions in 1999 and 43.2% in 2005). Between 1999 and 2005 there was a shift from the small-spectrum phenethicillin, a penicillin preparation [ratio 2005/1999 0.76; 95% confidence interval (CI) 0.72-0.81], to amoxicillin/clavulanic acid (ratio 2005/1999 1.70; 95% CI 1.61-1.79) and from the old macrolide erythromycin (ratio 2005/1999 0.35; 95% CI 0.32-0.39) to the new macrolide antibiotic azithromycin (ratio 2005/1999 1.78; 95% CI 1.65-1.92).

Archives of Disease in Childhood, 2012

Antibiotic drugs are frequently used for viral infections in children. It is probable that health... more Antibiotic drugs are frequently used for viral infections in children. It is probable that health beliefs and parental concern have great influence on the use of drugs in children. This study, performed in The Netherlands, investigates whether the use of antibiotics in children is associated with the use of medicines by parents. In this observational cohort study, the authors selected 6731 children from the prescription database IADB.nl who did not receive antibiotics until their fifth birthday and 1479 children who received at least one antibiotic prescription every year. The authors then selected parents for each group of children (5790 mothers and 4250 fathers for the children who did not receive antibiotics and 1234 mothers and 1032 fathers for the children who regularly received antibiotics). The authors compared the use of antibiotics and other medicines between the two groups of parents. Parents of children who received antibiotics recurrently were found to use more antibiotics themselves compared with parents of children who did not receive antibiotics. Moreover, this group also showed a higher percentage of chronic medication use: (11.3 vs 6.2% (mothers) and 13.1% vs 9.5% (fathers)). Mothers more often use antacids, non-steroidal anti-inflammatory drugs (NSAIDs), analgesics, anxiolytics, hypnotics, antidepressants, drugs for treatment of asthma and antihistamines. Fathers use more antacids, cardiovascular drugs, NSAIDs and asthma drugs. The parents of children who receive antibiotic drugs regularly use more medicines compared with the parents of children who use no antibiotic drugs. Parents' medicine use may influence that of children and is a factor physicians and pharmacists should take into account.

Acta Paediatrica, 2009

Antibiotic drugs are most frequently used by 0- to 4-year-old children. We performed a cross-sect... more Antibiotic drugs are most frequently used by 0- to 4-year-old children. We performed a cross-sectional study in the Netherlands using a pharmacy prescription database to investigate the use, dose and course length of antibiotic drugs in 0- to 4-year-olds. We used a database with pharmacy drug-dispensing data. We investigated all prescriptions of systemic antibiotics prescribed in the years 2002-2006 for children of 0-4 years of age. Prescriptions for children under the age of 3 months were excluded. Children of 9-12 months of age received more antibiotics than children in other age groups. In the 3- to 6-month-olds, amoxicillin was prescribed in 75.2% of the cases. This percentage was 50.4% in the 4-year-olds. The contribution of other broad-spectrum antibiotics increased with age (clarithromycin and amoxicillin/clavulanic acid). Small-spectrum penicillins were prescribed less often than the broad-spectrum antibiotics. From the prescriptions of the five most used drugs, 97.6% were within the recommended dose range. Most course lengths corresponded with the guidelines. Of the prescriptions, 3.9% were unlicensed or off-label. Within the group of 0- to 4-year-old children, most antibiotics were used by 9- to 12-month-olds. The doses and course lengths were mostly correct, but the choice of antibiotics was not according to the guidelines. Young children received unlicensed and off-label prescribed antibiotics.

BMC public health, 2014

Large livestock farms might increase the infection risk for the nearby human population because o... more Large livestock farms might increase the infection risk for the nearby human population because of an increased risk for disease outbreaks and because antibiotic-resistant bacteria are more likely to be present. We hypothesized that populations residing in rural areas have more contact with cattle compared with populations in urban areas, and will use more antibiotics or more frequently require a new course of antibiotics. Using data from the prescription database IADB.nl, we compared antibiotic use by patients living in rural areas to the use by patients living in urban areas. We also followed cohorts of antibiotic users and determined the patients who required a second antibiotic within 14 days after beginning the first antibiotic. The yearly prevalence of antibiotic use was greater in rural areas compared with urban areas (2009: 23.6% versus 20.2% (p < 0.001), especially in the younger age groups. More adult patients residing in rural areas required a second course of antibiot...

Diabetes/metabolism research and reviews, Jan 2, 2015

Insulin analogues are commonly used in pregnant women with diabetes. It is not known if the use o... more Insulin analogues are commonly used in pregnant women with diabetes. It is not known if the use of insulin analogues in pregnancy is associated with any higher risk of congenital anomalies in the offspring compared with use of human insulin. We performed a literature search for studies of pregnant women with pregestational diabetes using insulin analogues in the first trimester and information on congenital anomalies. The studies were analyzed to compare the congenital anomaly rate among fetuses of mothers using insulin analogues with fetuses of mothers using human insulin. Of 29 studies we included 1286 fetuses of mothers using short-acting insulin analogues with 1089 references of mothers using human insulin and 768 fetuses of mothers using long-acting insulin analogues with 685 references of mothers using long-acting human insulin (Neutral Protamine Hagedorn; NPH). The congenital anomaly rate was 4.84% and 4.29% among the fetuses of mothers using lispro and aspart. For glargine a...

Pharmacoepidemiology and drug safety, 2011

To explore the possibility to detect adverse drug reactions (ADRs) from a pharmacy prescription d... more To explore the possibility to detect adverse drug reactions (ADRs) from a pharmacy prescription database by examining the use of proxy-drugs during the treatment. From a pharmacy prescription database we selected all children of 0-6 years old who started an antibiotic drug between 1999 and 2006. In the period of 5 days before till 12 days after the initiation of the antibiotic, we examined the number of prescriptions of 5 groups of proxy-drugs associated with adverse reactions: propulsives, skinmedication, antihistaminics, drugs against candidiasis and diarrhea. We did this also for cases where the children did not use any other drugs on the start day (t = 0) and the 5 days before, to focus on the use of proxy-drugs not related to the infection. A total of 105,804 antibiotic courses were selected. The use of the proxy-drugs was the highest at the first day with no significant increase in the days thereafter. In case of no use of any other drugs from day -5 till day 0 a significant i...

European Journal of Clinical Pharmacology, 2008

Objective Antibiotics are the most commonly prescribed drugs used by children. Excessive and irra... more Objective Antibiotics are the most commonly prescribed drugs used by children. Excessive and irrational use of antibiotic drugs is a world-wide concern. We performed a drug utilization study describing the patterns of antibiotic use in children aged 0-19 years between 1999 and 2005 in the Netherlands. Methods We used IADB.nl, a database with pharmacy drug dispensing data covering a population of 500,000 people and investigated all prescriptions of oral antibiotic drugs (ATC J01) for children ≤19 years between 1999 and 2005. Results The total number of antibiotic prescriptions per 1000 children per year ranged from 282 in 2004 to 307 in 2001 and did not change between years during the study period in a clinically relevant way. The prevalence of receiving at least one prescription varied between 17.8% in 2004 and 19.3% in 2001. Amoxicillin was the most frequently prescribed drug (46.4% of all antibiotic prescriptions in 1999 and 43.2% in 2005). Between 1999 and 2005 there was a shift from the small-spectrum phenethicillin, a penicillin preparation [ratio 2005/1999 0.76; 95% confidence interval (CI) 0.72-0.81], to amoxicillin/clavulanic acid (ratio 2005/1999 1.70; 95% CI 1.61-1.79) and from the old macrolide erythromycin (ratio 2005/1999 0.35; 95% CI 0.32-0.39) to the new macrolide antibiotic azithromycin (ratio 2005/1999 1.78; 95% CI 1.65-1.92).

Archives of Disease in Childhood, 2012

Antibiotic drugs are frequently used for viral infections in children. It is probable that health... more Antibiotic drugs are frequently used for viral infections in children. It is probable that health beliefs and parental concern have great influence on the use of drugs in children. This study, performed in The Netherlands, investigates whether the use of antibiotics in children is associated with the use of medicines by parents. In this observational cohort study, the authors selected 6731 children from the prescription database IADB.nl who did not receive antibiotics until their fifth birthday and 1479 children who received at least one antibiotic prescription every year. The authors then selected parents for each group of children (5790 mothers and 4250 fathers for the children who did not receive antibiotics and 1234 mothers and 1032 fathers for the children who regularly received antibiotics). The authors compared the use of antibiotics and other medicines between the two groups of parents. Parents of children who received antibiotics recurrently were found to use more antibiotics themselves compared with parents of children who did not receive antibiotics. Moreover, this group also showed a higher percentage of chronic medication use: (11.3 vs 6.2% (mothers) and 13.1% vs 9.5% (fathers)). Mothers more often use antacids, non-steroidal anti-inflammatory drugs (NSAIDs), analgesics, anxiolytics, hypnotics, antidepressants, drugs for treatment of asthma and antihistamines. Fathers use more antacids, cardiovascular drugs, NSAIDs and asthma drugs. The parents of children who receive antibiotic drugs regularly use more medicines compared with the parents of children who use no antibiotic drugs. Parents&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39; medicine use may influence that of children and is a factor physicians and pharmacists should take into account.

Acta Paediatrica, 2009

Antibiotic drugs are most frequently used by 0- to 4-year-old children. We performed a cross-sect... more Antibiotic drugs are most frequently used by 0- to 4-year-old children. We performed a cross-sectional study in the Netherlands using a pharmacy prescription database to investigate the use, dose and course length of antibiotic drugs in 0- to 4-year-olds. We used a database with pharmacy drug-dispensing data. We investigated all prescriptions of systemic antibiotics prescribed in the years 2002-2006 for children of 0-4 years of age. Prescriptions for children under the age of 3 months were excluded. Children of 9-12 months of age received more antibiotics than children in other age groups. In the 3- to 6-month-olds, amoxicillin was prescribed in 75.2% of the cases. This percentage was 50.4% in the 4-year-olds. The contribution of other broad-spectrum antibiotics increased with age (clarithromycin and amoxicillin/clavulanic acid). Small-spectrum penicillins were prescribed less often than the broad-spectrum antibiotics. From the prescriptions of the five most used drugs, 97.6% were within the recommended dose range. Most course lengths corresponded with the guidelines. Of the prescriptions, 3.9% were unlicensed or off-label. Within the group of 0- to 4-year-old children, most antibiotics were used by 9- to 12-month-olds. The doses and course lengths were mostly correct, but the choice of antibiotics was not according to the guidelines. Young children received unlicensed and off-label prescribed antibiotics.

BMC public health, 2014

Large livestock farms might increase the infection risk for the nearby human population because o... more Large livestock farms might increase the infection risk for the nearby human population because of an increased risk for disease outbreaks and because antibiotic-resistant bacteria are more likely to be present. We hypothesized that populations residing in rural areas have more contact with cattle compared with populations in urban areas, and will use more antibiotics or more frequently require a new course of antibiotics. Using data from the prescription database IADB.nl, we compared antibiotic use by patients living in rural areas to the use by patients living in urban areas. We also followed cohorts of antibiotic users and determined the patients who required a second antibiotic within 14 days after beginning the first antibiotic. The yearly prevalence of antibiotic use was greater in rural areas compared with urban areas (2009: 23.6% versus 20.2% (p < 0.001), especially in the younger age groups. More adult patients residing in rural areas required a second course of antibiot...