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XCAH02_1.1.4

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Field description Field abbreviation Field version Field length Field type
Common Aggregation Hierarchy, second level grouping XCAH02 1.1.4 8 Char

Valid entries

Code Label
CAH01-01 medicine and dentistry
CAH02-02 pharmacology, toxicology and pharmacy
CAH02-04 nursing and midwifery
CAH02-05 medical sciences
CAH02-06 allied health
CAH03-01 biosciences
CAH03-02 sport and exercise sciences
CAH04-01 psychology
CAH05-01 veterinary sciences
CAH06-01 agriculture, food and related studies
CAH07-01 physics and astronomy
CAH07-02 chemistry
CAH07-04 general, applied and forensic sciences
CAH09-01 mathematical sciences
CAH10-01 engineering
CAH10-03 materials and technology
CAH11-01 computing
CAH26-01 geography, earth and environmental studies
CAH13-01 architecture, building and planning
CAH15-01 sociology, social policy and anthropology
CAH15-02 economics
CAH15-03 politics
CAH15-04 health and social care
CAH16-01 law
CAH17-01 business and management
CAH24-01 media, journalism and communications
CAH19-01 English studies
CAH19-02 Celtic studies
CAH19-04 languages and area studies
CAH20-01 history and archaeology
CAH20-02 philosophy and religious studies
CAH25-01 creative arts and design
CAH25-02 performing arts
CAH22-01 education and teaching
CAH23-01 combined and general studies

Dependent fields

  • None

Depend upon fields

  • XHECOS

Additional information

The Common Aggregation Hierearchy is an aggregation methodology that can be applied to both HECOS and JACS subject coding frames in order to allow for time series analysis.

The datasets tables Cyy051_SJ (for the Student record) and Cyy054_SJ (for the Student Alternative record) are the HECoS subject by full person equivalent (FPE) tables, that hold merged subject data from the appropriate Course and CourseSubject records apportioned using the HESA 'combination splitter' methodology.

XCAH02 takes the HECoS subject and derives its value based on the HECoS/CAH mapping

XFPE01 apportions the subjects to a nominal FPE, according to the number of subjects submitted per Course and the weighting allocated to a Course's subjects.

Technical Specification

XCAH02 XHECOS
CAH01-01 100270, 100267, 100271, 100276, 101334, 101336, 100748, 101339, 101338, 101337, 101331, 101309, 101327, 100261, 101324, 101325, 100131, 100266, 100268, 100275
CAH02-04 100290, 100279, 100281, 100285, 100295, 100293, 100288, 100280, 100283, 100287, 100286, 100746, 100282, 100284, 101333, 100747, 100289, 100291, 100292, 100294
CAH02-02 100250, 100277, 100251
CAH02-06 100246, 101289, 101329, 100273, 100749, 100750, 100255, 101291, 100744, 100247, 101511, 100036, 100037, 101332, 101317, 101335, 100248, 101290, 100252, 100233, 100234, 100235, 100739, 100236, 100241, 100242, 100237, 101340, 101241, 100243, 100253, 100239, 101375, 101320, 100495, 100249, 100254
CAH02-05 100129, 100132, 101330, 100260, 100257, 100265, 101382, 100912, 100272, 100264, 100540, 100258, 100038, 100274, 100262
CAH03-01 100345, 100346, 100848, 101318, 101457, 100347, 100864, 101459, 100348, 100849, 100351, 100850, 101458, 100906, 100909, 100822, 100881, 100911, 100907, 100353, 100872, 100826, 100873, 100874, 100910, 101376, 101460, 100355, 100937, 100880, 100829, 100834, 100882, 100883, 100356, 101378, 100259, 100901, 100898, 100899, 100900, 100902, 101377, 100344, 100948, 100949, 100352, 101380, 100354, 100932, 101373, 100343, 100865, 100858, 100350, 100847
CAH03-02 101319, 100433, 101379, 100095, 100096, 100098, 100475
CAH04-01 100497, 100493, 100954, 101294, 100387, 100950, 101383, 100499, 100953, 100952, 100496, 101342, 100494, 100985, 101464, 101381, 100993, 101345, 101344, 100958, 101341, 101363, 101003, 101463, 101462, 100959, 100498, 101343
CAH05-01 101384, 101347, 100531, 101461, 101220, 100908, 100532, 100938, 100939, 100941, 100942
CAH06-01 100522, 100936, 100940, 100523, 100519, 101025, 101024, 100516, 100884, 101385, 101010, 101006, 100517, 100518, 100976, 100946, 100947, 100945, 101348, 100978, 100529, 101001, 100974, 101004, 100998, 100468, 100979, 100990, 100977, 101014, 100520, 101017, 101388, 100527, 101387, 101021, 101022, 100526, 101018
CAH07-01 100427, 100580, 101060, 101068, 100416, 101071, 101223, 101391, 101061, 100577, 101076, 101390, 100430, 100419, 101077, 101075, 100425, 101300, 101074, 101396, 100579, 100426, 100431, 100414, 100415, 101103, 101102
CAH07-02 100413, 101038, 100417, 101042, 101044, 101045, 101041, 101043, 101046, 100420, 101054, 100422, 101389, 100423, 101050, 101053
CAH07-04 100424, 100384, 101222, 101219, 100386, 100388, 100392, 100390, 100391
CAH09-01 100400, 101029, 101028, 100401, 100402, 100403, 101027, 100405, 100404, 101030, 101031, 101032, 101034, 100406, 101033
CAH10-01 100160, 100182, 100184, 100429, 100192, 100190, 100201, 100109, 100211, 100110, 100193, 100202, 100170, 100205, 100206, 100152, 100209, 100213, 101398, 101397, 100428, 100114, 100115, 100564, 100229, 100117, 100116, 100207, 100568, 101216, 101243, 101210, 100126, 100127, 100005, 100128, 100138, 100130, 100572, 100120, 100148, 100548, 100180, 100549, 101048, 100551, 100156, 100565, 100157, 100153, 100219, 100154, 101399, 100539, 100162, 100166, 101355, 100546, 100163, 100164, 100581, 101354, 101353, 100165, 100553, 100168, 100177, 101234, 100169, 100118, 100188, 100159, 100141, 100135, 100143, 100175, 100176, 100172, 100178, 100144, 100183, 100204, 100185, 101013, 100573
CAH10-03 100550, 100212, 100155, 100566, 101217, 100545, 100203, 100033, 100210, 100145, 100214, 100544, 100194, 100134, 100136, 100137, 100139, 100222, 100186, 100093, 100560, 100230, 101356, 100225
CAH11-01 100734, 100365, 100366, 100741, 100736, 100737, 100735, 101400, 100367, 100372, 100373, 100869, 100755, 100754, 100994, 100751, 100371, 100757, 100963, 100753, 100756, 100376, 100960, 100956, 100821, 100374, 100359, 100989, 100968, 100992, 100961, 100966, 100363, 101267, 101268, 101019, 101020, 100360, 100361, 100362, 100738, 100358, 100385, 100368
CAH26-01 100409, 101352, 101070, 100408, 101064, 101394, 101079, 101058, 101065, 100410, 101091, 101067, 101407, 100671, 100665, 100469, 101408, 100478, 100668, 100669, 100666, 101078, 100381, 101072, 100986, 100369, 101056, 101104, 101351, 100379, 100394, 101106, 100380, 101093, 101084, 101083, 101082, 101086, 100395, 100396, 101089, 101073, 100418, 100382, 100421, 100398, 101105, 101081
CAH13-01 100583, 100121, 100122, 100147, 100216, 100584, 100585, 100149, 100150, 100151, 100586, 100825, 100217, 100590, 100124, 100588, 100196, 100197, 100593, 100198, 100199, 100594
CAH15-01 101307, 100471, 100619, 100484, 100625, 100624, 100621, 101326, 100623, 100629, 100626, 100628, 100627, 100505, 101465, 100631, 101405, 100622, 100483, 100651, 100648, 100645, 100647, 100652, 100502, 101406, 100649, 100436, 101218, 100663, 100437, 101358, 101359, 100488, 101233
CAH15-02 100600, 100597, 100449, 100604, 100601, 100606, 100450, 100451, 100452, 101402, 101401
CAH15-03 101404, 100618, 101507, 100609, 101510, 100612, 101509, 101403, 100489, 100490, 101288, 101506, 101357, 100491, 100090, 100091, 101508, 100616, 100610, 100617
CAH15-04 100659, 100655, 100662, 100501, 100503, 100466, 100654, 100455, 100456, 100457, 100476, 100653, 100473
CAH16-01 100482, 100683, 100685, 101323, 100676, 100680, 100691, 100485, 100692, 100693, 100677, 100486, 100686, 100689, 100681, 100684, 100678, 100690
CAH17-01 100078, 100079, 100808, 100080, 100218, 100074, 100856, 101215, 100853, 100846, 100075, 100644, 100855, 100851, 100813, 100811, 100823, 101308, 100815, 100819, 100088, 100817, 100089, 100814, 100812, 100820, 100092, 101040, 100896, 100810, 100866, 101049, 100085, 100861, 100083, 100891, 100084, 100087, 100893, 100894, 100097, 100875, 100100, 100101, 100102, 100106, 100827, 100107, 100832, 100835, 100830, 100828, 100831, 100104, 100105, 100840, 100838, 100845, 100836, 100837, 100868, 101409, 100743
CAH24-01 100915, 100914, 100370, 100916, 100913, 100918, 100076, 100919, 100926, 100927, 100925, 100439, 100442, 100445, 100440, 100058, 100444, 100443, 100922, 100921, 100920
CAH19-01 100320, 101109, 100318, 101108, 100319, 101094, 101095, 101111, 101492, 101473, 101483, 101477, 101472, 101487, 101476, 101493, 101486, 101479, 101478, 101468, 101495, 101480, 101485, 101471, 101475, 101490, 101489, 101467, 101496, 101481, 101107, 101484, 101469, 101470, 101474, 101491, 101494, 101488, 101482, 100046, 100730, 100731, 100729, 100317, 101412, 100970, 101410, 100328, 100972, 100971, 100973, 101035, 101016
CAH19-02 101118, 101120, 101497, 100333, 101163, 100335, 101419, 101121, 101413, 101315
CAH19-04 100321, 101132, 101133, 100322, 101424, 101161, 100323, 101134, 101135, 100324, 101149, 101425, 101145, 101148, 100326, 101137, 101136, 100327, 101143, 100765, 101142, 101144, 101141, 100332, 101139, 101138, 100325, 101155, 101501, 101312, 101153, 101500, 101152, 101158, 100331, 100330, 101157, 101499, 101151, 101428, 101429, 101180, 101177, 101165, 101166, 101167, 101164, 101271, 101174, 101430, 101179, 101368, 101169, 101170, 101171, 101168, 101212, 101371, 101172, 101372, 101258, 101175, 101369, 101185, 101188, 101189, 101184, 101198, 101192, 101432, 101367, 101194, 101269, 101191, 101196, 101197, 101190, 101193, 101433, 101503, 101366, 101431, 101434, 101504, 101195, 100316, 101206, 101205, 101207, 101201, 101202, 101199, 101203, 101204, 101415, 101113, 101117, 101112, 101417, 101114, 101037, 101414, 101426, 101159, 101150, 101427, 101311, 100329, 101115, 101416, 101130
CAH20-01 101360, 100767, 100298, 100758, 100774, 100771, 101436, 100301, 100761, 100670, 100762, 100779, 101248, 100763, 100302, 100784, 100785, 100664, 100714, 100780, 100307, 100781, 100778, 100759, 100764, 100769, 100308, 100309, 100786, 100310, 101435, 100766, 101498, 100311, 100312, 100772, 100773, 100768, 100760, 100777, 100782, 100306, 100783, 100299, 101438, 101440, 100787, 101439, 101261, 101437, 100599, 100807, 100805, 101422, 101423, 101126, 101129, 100300, 101420, 101125, 101124, 101421
CAH20-02 101442, 100793, 100791, 101441, 100337, 100338, 101443, 100792, 100801, 100798, 100795, 100803, 100799, 101444, 100796, 100797, 100802, 100339, 100800, 101445, 101446, 100340, 100794
CAH25-01 101361, 101362, 100587, 100059, 100589, 100595, 100592, 100003, 100048, 100052, 100054, 100055, 100633, 100060, 100061, 100062, 100636, 101316, 100050, 100051, 100630, 100632, 100375, 100057, 101214, 100716, 100890, 100888, 100441, 100887, 100063, 100924, 100923, 100717, 101505, 100726, 100895, 100724, 100706, 101374, 100721, 100725, 101455, 100728
CAH25-02 100071, 101450, 100854, 100650, 100867, 100674, 100842, 101447, 100661, 100639, 100843, 100870, 100656, 100070, 100643, 100695, 100642, 100223, 100221, 101449, 100035, 100637, 100667, 101448, 100841, 101451, 100657, 100844, 100862, 100067, 100707, 100710, 100697, 100069, 100708, 100703, 100704, 100702, 100700, 100698, 100705, 100885, 101452, 100711, 101454, 100886, 100068, 101453, 100712
CAH22-01 100454, 100463, 100459, 100460, 100461, 100462, 101322, 100508, 100464, 101088, 100465, 100507, 100510, 100509, 100511, 101246, 100512, 101087, 101085, 100513, 200001
CAH23-01 101273, 101274, 101275, 101279, 100658, 101278, 101221, 100962, 101090, 101276, 101277, 100314, 100065

Revision history

Date Version Notes
2021-02-26 1.1.4 The coding frame has been updated to Common Aggregation Hierarchy version 1.3.3, amendments were actioned on feedback received from DLSG, new codes created due to changes to the CAH grouping and old codes deprecated
2020-05-19 1.1.3 Additional valid entry 200001 added to CAH22-01, this has been added as referenced in XHECOS_XFPE01
2020-03-26 1.1.2 The coding frame has been updated to HECoS rather than JACS valid entries
2019-03-07 1.1.1 New derived field to determine the Common Aggregation Hierarchy, first level grouping

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