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Table 4 Total NHS healthcare costs for cases and controls for the first five years following index date

From: The prevalence and incidence, resource use and financial costs of treating people with attention deficit/hyperactivity disorder (ADHD) in the United Kingdom (1998 to 2010)

Age group Year Group Mean Standard deviation Median Percentile 25 Percentile 75
All ages Y1 Case £1,327 £2,114 £890 £427 £1,742
Control £328 £2,248 £69 £0 £214
Y2 Case £1,196 £2,228 £770 £302 £1,544
Control £337 £2,215 £65 £0 £208
Y3 Case £1,148 £3,749 £735 £267 £1,459
Control £316 £1,459 £64 £0 £197
Y4 Case £1,126 £3,535 £673 £235 £1,439
Control £325 £1,531 £64 £0 £201
Y5 Case £1,112 £4,137 £632 £196 £1,420
Control £361 £2,103 £65 £0 £211
Aged 6 to 17 years at index date Y1 Case £1,290 £2,119 £879 £425 £1,689
Control £315 £2,354 £64 £0 £198
Y2 Case £1,162 £2,195 £753 £296 £1,506
Control £333 £2,332 £64 £0 £199
Y3 Case £1,124 £3,917 £708 £264 £1,428
Control £308 £1,506 £62 £0 £191
Y4 Case £1,116 £3,712 £664 £236 £1,412
Control £325 £1,575 £64 £0 £201
Y5 Case £1,105 £4,377 £612 £186 £1,385
Control £372 £2,227 £65 £0 £213
Aged ≥18 years at index date Y1 Case £1,844 £2,118 £1,185 £648 £2,365
Control £550 £1,460 £130 £31 £427
Y2 Case £1,450 £1,616 £1,111 £385 £1,969
Control £509 £1,091 £116 £23 £419
Y3 Case £1,455 £2,157 £886 £546 £1,597
Control £604 £1,388 £111 £0 £422
Y4 Case £1,512 £2,077 £894 £417 £1,873
Control £660 £2,087 £96 £0 £372
Y5 Case £1,401 £1,439 £1,058 £265 £2,136
Control £515 £952 £118 £19 £495