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Freedom of Information Team

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Dear Leo

Your request for information, as detailed in your email below, has been
handled under the Freedom of Information Act 2000 (FOIA). Please find
attached our response, as a csv file, which has also been pasted below in
text format, for our own ease of reference.

Your Questions:

please provide the following information regarding the waiting times of
patients referred to the Gender Identity Development Service (GIDS):

For each financial year in which data are held, please provide the
following statistics

 1. on the number of days referred patients were on the GIDS waiting list
before having their first GIDS appointment (of those patients who had
received their first appointment by the end of that financial year):
 2. for each individual GIDS clinic separately and for the service as a
whole (GIDS-wide).
 3. separately for patients assigned male at birth and those assigned
female at birth, and in combination regardless of sex assigned at
birth, at both the GIDS-wide and individual clinic level.

 1. Mean
 2. Mode
 3. Standard deviation
 4. Skewness (per the SKEW function in Excel)
 5. Kurtosis (per the KURT function in Excel)
 6. Minimum
 7. Maximum
 8. First quartile (Q1)
 9. Median
10. Third quartile (Q3)
11. Interquartile range (IQR)

Explanatory Notes about our response:

 A. The Trust holds GIDS Referral and GIDS Waiting List data from
Financial Year 2001/02 to 2022/23, with the following *exceptions:

•    From July 2021: GIDS referrals from General Practitioners and other
non-CAMHS/paediatric referrers were handled by Arden and GEM CSU on behalf
of NHS England

•    From October 2022 all new referrals from any referrer were redirected
to Arden & GEM CSU.

•    From 23 March 2023, The whole GIDS waiting list and all new referrals
were managed by Arden and GEM. GIDS no longer held or managed the waiting
list for GIDS, the Children and Young People’s Gender Dysphoria Services.

•    NHSE/I are now the data controllers for the AGEM Referral Hub. Should
you wish to contact them directly to learn more about the
referrals/waiting list that they hold, the relevant email address is
[1][email address]

 B. We note your request that the data be provided in Excel format,
however it has been provided as a csv file, in line with guidance
issued by the Information Commissioner’s Office in order to mitigate
risk to personal information. This Trust no longer provides data as
excel spreadsheets/workbooks.
 C. The data supplied has been based on patient age at time that referral
was received
 D. The errors indicated as "#DIV/0!" and "#N/A" denote where it was not
possible to calculate measure based on given backing data

GIDS Referrals Annually: Waiting Times in days from Referral to First
Appointment

All 1. 2. 3. Std 4. 5. 6. 7. 8. 9. 10. 11.
Genders Mean Mode deviation Skewness Kurtosis Min Max First Median Third Interquartile
(per the (per the quartile quartile range (IQR)
SKEW KURT (Q1) (Q3)
function function
in in
Excel) Excel)
2010/11 377.54 113.00 441.07 2.31 7.00 2842 2 102 202 487 385
2011/12 109.87 106.00 167.36 4.97 25.96 1233 6 39 98 115 76
2012/13 97.43 118.00 58.10 3.19 20.31 547 1 76.75 105 116 39.25
2013/14 97.25 119.00 46.19 1.66 14.89 454 5 85 112 118.75 33.75
2014/15 97.16 119.00 40.85 0.76 13.64 471 0 89 111 118 29
2015/16 111.77 125.00 48.31 1.46 19.74 644 0 101 119 125 24
2016/17 198.08 266.00 85.55 -0.62 -0.27 519 0 149 224 265 116
2017/18 220.66 160.00 112.08 -0.06 -0.40 620 0 153 238 295 142
2018/19 403.36 532.00 177.20 -0.79 -0.43 673 0 294 448 546 252
2019/20 507.79 651.00 241.68 -0.69 -0.60 1063 1 356 558 703 347
2020/21 628.85 792.00 262.87 -0.59 0.33 2089 1 461 700 833 372
2021/22 760.63 891.00 343.34 -0.59 -0.62 1739 0 530 832 1049 519
2022/23 1098.17 1289.00 444.30 -1.86 1.69 1514 0 1190.8 1282 1316.3 125.5
2023/24 617.75 #N/A 630.92 1.65 3.05 1679 26 254 383 746.75 492.8
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11.
Mean Mode Standard Skewness Kurtosis Minimum Maximum First Median Third Interquartile
deviation (per the (per the quartile quartile range (IQR)
AFAB SKEW KURT (Q1) (Q3)
function function
in in
Excel) Excel)
2010/11 381.87 119.00 426.48 1.77 2.76 2016 7 102.5 202 447 344.5
2011/12 111.45 120.00 180.93 5.19 27.64 1233 6 39 98 114 75
2012/13 99.55 118.00 63.16 3.71 23.48 547 1 78.5 106 117 38.5
2013/14 97.07 120.00 45.26 1.64 17.52 454 5 82 113 119 37
2014/15 98.59 119.00 43.16 1.51 18.05 471 0 92.5 111 119 26.5
2015/16 114.07 120.00 48.79 2.21 27.85 644 0 105.25 119 125 19.75
2016/17 200.92 266.00 82.30 -0.65 0.03 519 0 155 224 262 107
2017/18 223.69 160.00 109.79 -0.13 -0.38 620 0 159.75 240 296 136.3
2018/19 407.23 532.00 177.86 -0.84 -0.33 673 1 308 451 549.75 241.8
2019/20 521.65 651.00 239.67 -0.79 -0.41 1063 1 374.75 572.5 708.25 333.5
2020/21 635.43 792.00 256.32 -0.84 -0.15 1167 1 476 708 833 357
2021/22 780.83 1066.00 337.51 -0.74 -0.41 1318 1 579.75 854.5 1056.3 476.5
2022/23 1122.30 1289.00 417.46 -2.08 2.63 1514 0 1199 1282 1317 118
2023/24 178.00 #N/A 152.00 #DIV/0! #DIV/0! 330 26 102 178 254 152
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11.
Mean Mode Standard Skewness Kurtosis Minimum Maximum First Median Third Interquartile
deviation (per the (per the quartile quartile range (IQR)
AMAB SKEW KURT (Q1) (Q3)
function function
in in
Excel) Excel)
2010/11 311.47 15.00 379.29 4.23 25.70 2842 9 106 172 465 359
2011/12 107.86 14.00 156.48 4.30 19.21 954 6 32 91 116 84
2012/13 95.37 118.00 52.91 1.87 8.14 326 1 73.75 103.5 114.75 41
2013/14 98.51 112.00 48.29 1.73 12.28 393 7 92 111 118 26
2014/15 94.99 118.00 37.18 -1.03 0.27 186 0 83 111 118 35
2015/16 107.25 125.00 47.01 -0.16 0.94 290 1 89 118 125 36
2016/17 191.90 174.00 91.90 -0.55 -0.77 393 0 131 221 266 135
2017/18 213.19 35.00 117.24 0.10 -0.42 614 1 126.5 228 287.5 161
2018/19 394.23 490.00 175.25 -0.68 -0.63 666 0 273.75 434 538.5 264.8
2019/20 474.59 14.00 241.95 -0.49 -0.91 863 1 319.5 522.5 685.75 366.3
2020/21 620.40 761.00 281.85 -0.12 1.43 2089 2 414 686 843 429
2021/22 727.96 1155.00 352.06 -0.31 -0.81 1739 0 437 781 1017 580
2022/23 1025.76 1299.00 509.71 -1.38 0.05 1435 0 1109 1279 1313 204
2023/24 1679.00 #N/A 0.00 #DIV/0! #DIV/0! 1679 1679 1679 1679 1679 0
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11.
Mean Mode Standard Skewness Kurtosis Minimum Maximum First Median Third Interquartile
Gender deviation (per the (per the quartile quartile range (IQR)
Not SKEW KURT (Q1) (Q3)
stated function function
in in
Excel) Excel)
2010/11 650.94 2.00 613.92 0.52 -1.11 1857 2 49 562 1037 988
2011/12 110.14 106.00 34.01 0.21 2.71 175 49 105 106 115.5 10.5
2012/13 90.50 122.00 33.26 -0.88 -1.01 122 28 59.25 107.5 113.25 54
2013/14 86.08 106.00 34.76 -0.58 -1.53 123 27 57.25 106 115 57.75
2014/15 109.00 #N/A 0.00 #DIV/0! #DIV/0! 109 109 109 109 109 0
2015/16
2016/17
2017/18
2018/19 245.00 #N/A 0.00 #DIV/0! #DIV/0! 245 245 245 245 245 0
2019/20 314.86 #N/A 239.65 0.67 0.08 765 21 105 377 415.5 310.5
2020/21 445.67 #N/A 145.20 0.98 -0.04 765 282 333.75 398 515.25 181.5
2021/22 530.29 #N/A 303.81 0.11 -1.09 1036 113 213.25 544.5 750.25 537
2022/23
2023/24 436.00 #N/A 0.00 #DIV/0! #DIV/0! 436 436 436 436 436 0

Please note that information provided under FOIA relates to information
held by this Trust at the date on which the request was made.

We trust that you are satisfied with this response. If you are
dissatisfied then please write to us at [2][Tavistock and Portman NHS
Foundation Trust request email] within 40 working days, quoting the
reference details in the header of this email, and explaining the reason
for your dissatisfaction. The Trust would then appoint a senior manager,
not previously involved in this case, to conduct an internal review of our
original response and advise you of their findings, within 20 working
days, which would include either a revised response, or a rationale for
upholding the original response.

Yours sincerely,

Freedom of Information Team,

Tavistock and Portman
NHS Foundation Trust
Tavistock Centre
120 Belsize Lane
London NW3 5BA
[3]www.tavi-port.org
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From: Leo Pritchard
Sent: Tuesday, December 17, 2024 9:38 PM
To: Freedom of Information Requests
Subject: Freedom of Information request - GIDS patients' waiting times
each year

To whom it may concern,

I am writing to request, under the Freedom of Information Act 2000, that
you please provide the following information regarding the waiting times
of patients referred to the Gender Identity Development Service (GIDS):

For each financial year in which data are held, please provide the
following statistics on the number of days referred patients were on the
GIDS waiting list before having their first GIDS appointment (of those
patients who had received their first appointment by the end of that
financial year):
1. Mean
2. Mode
3. Standard deviation
4. Skewness (per the SKEW function in Excel)
5. Kurtosis (per the KURT function in Excel)
6. Minimum
7. Maximum
8. First quartile (Q1)
9. Median
10. Third quartile (Q3)
11. Interquartile range (IQR)

Please provide these data for each individual GIDS clinic separately and
for the service as a whole (GIDS-wide). Please provide these data
separately for patients assigned male at birth and those assigned female
at birth, and in combination regardless of sex assigned at birth, at both
the GIDS-wide and individual clinic level.

Please provide these data in a spreadsheet file to make it easier to
analyse them. Thank you very much for your time and help.

Yours sincerely,
Leo Pritchard

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