Table 3.

Data for each diet specification^† (Mean values and 95 % confidence intervals)

Diet specifications (g/4184 kJ (1000 kcal))	Time to peak plasma: mean peak plasma P (mmol/l)		Mean P AUC (mmol/l × h)		Ionised Ca area between baseline and curve (mmol/l × h)		Peak PTH (pg/ml)		Mean urine P excretion (mg/kg BW)		Mean P intake over sample day (mg/kg BW)		Test diet P intake (mg/kg BW)		Test diet added P intake (mg/kg BW)
	Mean	95 % CI	Mean	95 % CI	Mean	95 % CI	Mean	95 % CI	Mean	95 % CI	Mean	95 % CI	Mean	95 % CI	Mean	95 % CI
Diet A: total P 4·78 g, 3·5 g from SDHP, Ca:P 0·59	150 min*: 1·976	150 min: 1·724, 2·266	3·65a	2·80, 4·49	–0·337a	–0·495, –0·178	31·83a	24·32, 41·67	56·6a	45·1, 68·2	161·24	153·09, 169·39	100·98	86·67, 117·62	72·63	63·43, 83·15
Diet B: total P 3·38 g, no added inorganic P, Ca:P 1·55	0 min (no peak): 1·211	0 min (no peak): 1·053, 1·392	–1·1b	–1·4, –0·621	–0·145b	–0·285, –0·00553	8·07b	6·11, 10·65	29·2b	17·4, 41·0	130·80	123·72, 137·87	68·37	58·64, 79·69	0
Diet C: total P 1·13 g, no added inorganic P, Ca:P 1·23	0 min (no peak): 1·24	0 min (no peak): 1·14, 1·35	–1·01a	–1·4, –0·621	–0·26a	–0·347, –0·174	9·17a	7·58, 11·1	28·4a	21·0, 35·9	89·21	80·67, 97·75	25·56	22·80, 28·64	0
Diet D: total P 4·02, 0·5 g from STPP, Ca:P 1·63	120 min*: 1·26	120 min: 1·16, 1·37	–0·516b	–0·896, –0·136	–0·278a	–0·368, –0·189	11·6b	9·6, 14·0	30·2a	23·3, 37·1	150·48	141·94, 159·02	87·29	78·12, 97·52	22·42	20·26, 24·81
Diet E: total P 4·48 g, 0·75 g from STTP, Ca:P 1·59	120 min*: 1·32	120 min: 1·21, 1·44	–0·197b	–0·585, 0·191	–0·26a	–0·35, –0·17	14·0b,c	11·5, 17·0	35·2a	28·0, 42·3	161·09	152·55, 169·64	94·05	84·18, 105·07	33·67	30·47, 37·20
Diet F: total P 4·48 g, 1 g from STPP, Ca:P 1·48	120 min*: 1·5	120 min: 1·38, 1·63	–0·151b	–0·539, 0·236	–0·253a	–0·336, –0·17	16·0c,d	13·2, 19·3	32·2a	25·0, 39·4	159·28	150·73, 167·82	96·68	86·54, 108·01	45·19	40·92, 49·88
Diet G: total P 4·9 g, 1·5 g from STPP, Ca:P 1·64	120 min*: 1·63	120 min: 1·50, 1·78	0·35c	–0·0305, 0·731	–0·344a	–0·448, –0·241	20·4e	16·9, 24·6	37·3a	29·8, 44·7	168·49	159·95, 177·03	102·25	91·53, 114·22	67·05	60·77, 73·98
Diet H: total P 3·79 g, no added inorganic P, Ca:P 1·6	360 min: 1·24	360 min: 1·13, 1·36	–0·277a	–0·688, 0·134	–0·0963a	–0·157, –0·0351	7·46a	6·13, 9·07	26·58a	20·54, 32·62	138·99	130·62, 147·36	77·06	69·32, 85·64	0
Diet I: total P 3·86 g, 1·5 g from SDHP, Ca:P 1·59	110 min*: 1·40	110 min: 1·28, 1·54	0·48b	–0·00355, 0·82	–0·165a	–0·226, –0·104	9·18b	7·57, 11·13	27·76a	21·69, 33·83	136·23	126·50, 145·97	74·64	67·15, 82·96	29·20	26·54, 32·12
Diet J: total P 3·52 g, 1·5 g from STPP, Ca:P 1·7	60 min*: 1·40	60 min: 1·28, 1·53	–0·146a	–0·558, 0·265	–0·198b	–0·259, –0·137	9·07b	7·45, 11·03	25·36a	19·32, 31·40	132·67	123·64, 141·70	70·87	63·75, 78·78	30·12	27·38, 33·13
Diet K: total P 3·59, 1·5 g from SDHP, Ca:P 0·93	360 min*: 1·57	360 min: 1·44, 1·70	1·25a	0·629, 1·86	–0·24a	–0·31, –0·169	7·81a,b	6·00, 10·20	38·1a	28·7, 47·6	149·76	139·40, 159·82	86·74	75·85, 99·18	33·98	30·11, 38·33
Diet L: total P 4·17 g, 1·5 g from STPP, Ca:P 1·88	110 min*: 1·5	110 min: 1·36, 1·64	–0·241b	–0·882, 0·400	– 0·265a	–0·339, –0·192	8·89a,b	6·77, 11·70	31·0a	21·0, 41·0	155·63	139·16, 172·09	91·00	79·14, 104·61	32·81	28·93, 37·20
Diet M: total P 5·5 g, 1·5 g from STPP, Ca:P 1·7	110 min*: 1·51	110 min: 1·37, 1·65	0·0868b	–0·554, 0·728	–0·231b	–0·304, –0·158	10·60a	8·09, 14·00	40·9a	29·4, 52·4	184·09	166·78, 201·41	119·79	104·22, 137·66	32·07	28·27, 36·35
Diet N: total P 4·85 g, 0·5 g from STPP, Ca:P 1·47	0 min (no peak): 1·31	0 min (no peak): 1·17, 1·45	–0·577b	–1·24, 0·0895	–0·238a	–0·315, –0·162	7·23b	5·41, 9·67	33·5a	22·8, 44·1	151·14	129·97, 172·30	83·43	72·10, 96·53	8·71	7·55, 10·03

PTH, parathyroid hormone; BW, body weight; SDHP, sodium dihydrogen phosphate; STPP, sodium tripolyphosphate.

^a,b,c,d,e Mean values with unlike superscript letters were significantly different between diets within each study (P <0·05).

^*Time to peak plasma shows significant difference to baseline results.

^†Separate trials are delineated by a blank line.