Skip to main content

Table 3 Quality ratings of included studies

From: The impact of childhood diagnosed ADHD versus controls without ADHD diagnoses on later labour market attachment—a systematic review of longitudinal studies

Study Clearly stated research question/objective Clearly specified/defined population Participation rate ≥ 50% Population, inclusion/exclusion criteria Sample size justification Exposure measured prior to the outcome Timeframe Levels of exposure Valid and reliable measurement of exposure Assessment of exposure more than once Valid and reliable measurement of outcome Blinded outcome assessors Loss to follow-up ≤ 20% Measured and statistically adjustment of confounding Rating
Roy et al. [16] Yes No NR No No Yes Yes No Yes No Yes No NR Yes Fair
Owens et al. [13] Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Good
Hechtman et al. [8] Yes No NR No No Yes Yes Yes Yes Yes Yes No Yes Yes Fair
Biederman et al [3] Yes Yes CD Yes No Yes Yes NR Yes Yes Yes Yes No Yes Fair
Mannuzza et al. [11] CD Yes Yes No No Yes Yes No Yes No Yes Yes Yes Yes Fair