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Primary mental healthcare: a Dutch database study693Table 3.4. Medication prescriptionsMID-MH N=5,808Match-MH N=23,232OR (95%CI)aAll medication ≥1 prescription during research period, N (%) 5,450 (93.8) 21,452 (92.3) 1.31 (1.16–1.48)**Median types prescriptions per year (25–75 percentile)2.7 (1.3–4.5)** 2.0 (1.0–3.3)Psychotropics≥1 prescription during research period, N (%) 3,271 (55.4) 11,072 (47.7) 1.39 (1.31–1.47)**Median types prescriptions per year in people ≥1 psychotropic prescription in research period (25–75 percentile)0.5 (0.3–1.0)** 0.5 (0.3–1.0)N05A Antipsychotics, N (%) 1,158 (19.9) 1,716 (7.3) 3.15 (2.90–3.41)**N05B Anxiolytics, N (%) 1,446 (24.9) 4,473 (19.3) 1.41 (1.32–1.51)**N05C Hypnotics and sedatives, N (%) 949 (16.3) 3,603 (15.5) 1.07 (0.99–1.16)N06A Antidepressant, N (%) 1,459 (25.1) 5,096 (21.9) 1.20 (1.12–1.29)**N06B Psychostimulants, N (%) 275 (4.7) 1,177 (5.1) 0.93 (0.81–1.07)N06D Anti-dementia drugs, N (%) <10b 23 (0.1) not applicableN07B Drugs used in addictive disorders, N (%) 385 (6.6) 1,150 (5.0) 1.38 (1.22–1.55)**Anti-epileptics≥1 anti-epileptic N03A prescription during research period, N (%) 504 (8.7) 1,048 (4.5) 2.05 (1.83–2.29)**MID-MH: Group with mild intellectual disability and a mental health problem; Match-MH: Match control group with MH problem; **p < .001, MID compared with without-ID; aOR calculated for variable with an absolute number of ≥ 30 people in one of the groups, adjusted for age, sex, and years registered in the database; bAbsolute numbers below 10 may are not displayed.Strengths and limitationsAn important strength of this study is the unique focus on people with mildintellectual disabilities. By linking a primary care database with a social services information database, we identified people with MID in primary care. This fills a blind spot about people with MID who would have been overlooked without data linkage. Another important strength is that this study does not focus only on MH disorders, but gives a broader view by including MH complaints.There are some limitations regarding the use of databases containing routinely collected (health) data. In the NIVEL-PCD, details of diagnoses and treatments were limited, and the care provided could not be linked to specific ICPC-P codes. The SN-MID database is composed mostly of users Katrien Pouls sHL.indd 69 24-06-2024 16:26