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Table 4 Routine records of mental health diagnoses and specialty contacts among linked cohort versus Welsh population

From: Sources of potential bias when combining routine data linkage and a national survey of secondary school-aged children: a record linkage study

  Linked cohort Welsh population (aged 11–16 yrs)  
  n (%)
[95% CIs]
 
Any mental health diagnoses 373 (5.8%)
[5.26, 6.42]
20,551 (8.8%)
[8.72, 8.95]
 
Contact with a mental health speciality 334 (5.2%)
[4.68, 5.78]
17,994 (7.7%)
[7.63, 7.85]
 
Depression & anxiety diagnoses 125 (2.0%)
[1.63, 2.32]
8088 (3.5%)
[3.40, 3.55]
 
Self-harm 36 (0.6%)
[0.40, 0.78]
3311 (1.4%)
[1.38, 1.42]
 
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