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Table 3 Mean age in years in those receiving a stimulant medication for ADHD according to cultural and demographic factors

From: Identifying cross-cultural variations in psychostimulant use for attention deficit hyperactivity disorder using linked data

Predictors Univariable Multivariablea
Mean age Mean difference (95% CI) p value Mean age Mean difference (95% CI) p value
HPNO/LPNO status
 HPNOb 13.10    12.27   
 LPNO 16.08 2.99 (2.29, 3.68) <0.001 14.98 2.72 (2.00, 3.431) <0.001
Sex
 Maleb 12.82    12.78   
 Female 14.32 1.50 (1.30, 1.70) <0.001 14.47 1.70 (1.48, 1.90) <0.001
Geographical remoteness
 Metropolitanb 13.13    14.23   
 Rural 12.07 −1.06 (−1.30, −0.83) <0.001 13.63 −0.60 (−0.84, −0.36) <0.001
 Remote 11.50 −1.63 (−2.24, −1.02) <0.001 13.01 −1.21 (−1.82, −0.61) <0.001
Social disadvantage
 Least disadvantagedb 13.65    14.83   
 Less disadvantaged 12.18 −1.47 (−1.70, −1.26) <0.001 13.54 −1.28 (−1.50, −1.07) <0.001
 Little disadvantaged 12.03 −1.62 (−1.93, −1.31) <0.001 13.38 −1.45 (−1.76, −1.14) <0.001
 More disadvantaged 11.82 −1.83 (−2.27, −1.40) <0.001 13.17 −1.65 (−2.09, −1.22) <0.001
 Most disadvantaged 11.85 −1.80 (−2.14, −1.47) <0.001 13.20 −1.63 (−1.96, −1.29) <0.001
  1. a All parameters were included in this model so as to adjust each result for potential confounding by other covariates
  2. b Reference category