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Trends in drug-related hospitalisations in Northern Territory, 1999-2020

Northern Territory

There were 919 hospitalisations with a drug-related principal diagnosis in Northern Territory in 2019-20.

This is equivalent to 359 hospitalisations per 100,000 people, which was a significant increase from 2018-19 (318 hospitalisations per 100,000 people; p<0.001) (Table 1) and higher than the rate in 1999-00 (90 hospitalisations per 100,000 people) (Figure 1).

Sex

The rate of hospitalisations was higher among males than females in 2019-20 (397 versus 319 hospitalisations per 100,000 people).

Age

In 2019-20, the rate of hospitalisations was highest among the 20-29 age group, followed by the 10-19 and 30-39 age groups (789, 511, and 507 hospitalisations per 100,000 people, respectively).

Remoteness Area of Usual Residence

The highest rate of hospitalisations in 2019-20 was observed in remote and very remote Northern Territory (389 hospitalisations per 100,000 people), while the number of hospitalisations was highest in outer regional (515 hospitalisations), noting there are no major cities or inner regional areas in the Northern Territory (Figure 2).

External Cause of Drug Poisoning

In 2019-20, 37% of drug-related hospitalisations in Northern Territory were due to drug poisoning. Furthermore, 70% of drug poisoning related hospitalisations were intentional (96 hospitalisations per 100,000 people) and 24% were unintentional (33 hospitalisations per 100,000 people) (Figure 3).

Drug Type

In 2019-20, the rate of hospitalisations was highest where there was a principal diagnosis indicating cannabinoids (120 hospitalisations per 100,000 people) (Figure 4).

Compared to 2018-19, there were significant decreases in 2019-20 in the rates of hospitalisations related to non-opioid analgesics; antidepressants; antipsychotics and neuroleptics; and volatile solvents (p<0.050) (Table 1).

In contrast, there were significant increases in the rates of hospitalisations related to cannabinoids; amphetamines and other stimulants; opioids; and multiple drug use (p<0.050) (Table 1).


Figure 1. Age-standardised rate per 100,000 people of drug-related hospitalisations, by sex, Northern Territory, 1999-00 to 2019-20.


Figure 2. Age-standardised rate per 100,000 people of drug-related hospitalisations, by remoteness, Northern Territory, 2012-13 to 2019-20.

Note: The size (area) of the bubble is proportional to the number of hospitalisations. Data by remoteness are only available from 2012-13. There are no major cities and inner regional areas in Northern Territory.


Figure 3. Age-standardised rate per 100,000 people of drug-related hospitalisations, by principal diagnosis of mental and behavioural disorder due to substance use (A) and external cause of poisoning (B), Northern Territory, 1999-00 to 2019-20.

Note: Age-standardised rates were not calculated if the number of hospitalisations was less than or equal to 10 (please refer to our methods document for details). Suppressed data are visible as gaps in the data series.


Figure 4. Age-standardised rate per 100,000 people of drug-related hospitalisations, by drug identified in the principal diagnosis, Northern Territory, 1999-00 to 2019-20.

Note: Age-standardised rates were not calculated if the number of hospitalisations was less than or equal to 10 (please refer to our methods document for details). Suppressed data are visible as gaps in the data series.


Table 1. Age-standardised rate per 100,000 people of drug-related hospitalisations in 2019-20 and rate ratio and p-value for difference compared to 2018-19, in Northern Territory by drug type identified in the principal diagnosis


Age-standardised rate (95% CI) 2019-20 versus 2018-19
Drug 2019-20 2018-19 Rate ratio P-value
All drugs 359 (336,384) 318 (296,341) 1.13 (1.12,1.14) <0.001
Cannabinoids 120 (107,134) 87 (76,99) 1.38 (1.35,1.41) <0.001
Amphetamines and other stimulants 74 (64,86) 56 (47,65) 1.34 (1.30,1.37) <0.001
Non-opioid analgesics 49 (41,59) 56 (47,66) 0.88 (0.86,0.90) <0.001
Opioids 29 (22,37) 18 (13,25) 1.57 (1.51,1.64) <0.001
Antidepressants 23 (17,30) 27 (21,34) 0.84 (0.81,0.88) <0.001
Antiepileptic, sedative-hypnotic and antiparkinsonism drugs 22 (16,29) 21 (16,28) 1.02 (0.98,1.07) 0.300
Antipsychotics and neuroleptics 16 (11,21) 17 (13,23) 0.90 (0.86,0.94) <0.001
Multiple drug use 12 (8,18) 5.6 ( 3.2, 9.0) 2.22 (2.06,2.38) <0.001
Volatile solvents 12 (8,17) 25 (19,32) 0.47 (0.45,0.49) <0.001
Note: 95% confidence intervals for the age-standardised rate and rate ratio are shown in brackets. Please refer to our methods document on 'Presentation of results' for interpretation of rate ratios. Please also refer to our methods document on 'Scope of the data' and 'Coding of hospitalisations' for specifications of data selected and all exclusions.


Funding

The Drug Trends program is funded by the Australian Government Department of Health under the Drug and Alcohol Program.

Acknowledgements

We would like to acknowledge the Australian Institute of Health and Welfare for data from the National Hospital Morbidity Database.

Recommended citation

Chrzanowska, A., Man, N., Sutherland, R., Degenhardt, L. & Peacock, A. (2021). Trends in drug-related hospitalisations in Australia, 1999-2020. Sydney: National Drug and Alcohol Research Centre, UNSW Sydney.

Related Links

Hospitalisations data visualisations: https://drugtrends.shinyapps.io/hospital_separations

Hospitalisations methods document: https://ndarc.med.unsw.edu.au/resource-analytics/trends-drug-related-hospitalisations-australia-1999-2020

For other Drug Trends publications on drug-related hospitalisations and drug-induced deaths, go to: https://ndarc.med.unsw.edu.au/project/national-illicit-drug-indicators-project-nidip

For more information on NDARC research, go to: http://ndarc.med.unsw.edu.au/

For more information about the AIHW and NHMD, go to: https://www.aihw.gov.au/

For more information on ICD coding go to: http://www.who.int/classifications/icd/en/ https://www.ihpa.gov.au/what-we-do/icd-10-am-achi-acs-current-edition

For more research from the Drug Trends program go to: https://ndarc.med.unsw.edu.au/program/drug-trends

Contact us

Email: drugtrends@unsw.edu.au