Table 1.

C. difficile samples by week and % positive 2013 [2009].

	Toxin results 2013 [2009]
	Week	Negative	Positive	Samples sent	% Positive
Pre intervention April to June	Week 1	100 [144]	1 [5]	101 [149]	0.99 [3.36]
	Week 2	98 [117]	0 [9]	98 [126]	0 [7.14]
	Week 3	95 [130]	1 [6]	96 [136]	1.04 [4.41]
	Week 4	52 [154]	1 [5]	53 [159]	1.89 [3.14]
	Week 5	70 [157]	4 [2]	74 [159]	5.41 [1.26]
	Week 6	102 [117]	4 [6]	106 [123]	3.77 [4.88]
	Week 7	94 [144]	2 [3]	96 [147]	2.08 [2.04]
	Week 8	76 [111]	1 [5]	77 [116]	1.3 [4.31]
	Week 9	75 [138]	0 [8]	75 [146]	0 [5.48]
	Week 10	69 [152]	4 [4]	73 [156]	5.48 [2.56]
	Week 11	60 [118]	1 [5]	61 [123]	1.64 [4.07]
	Week 12	77 [128]	1 [12]	78 [140]	1.28 [8.57]
	Total	973 [1610]	20 [70]	993 [1680]	2 [4]
		Mean = 80.66 [134.1]	Mean = 1.66 [5.83]	Mean = 82.33 [140]
Intervention period – Algorithm [Memorandum]
Post intervention July to October	Week 13	62 [139]	4 [2]	66 [141]	6.06 [1.42]
	Week 14	61 [110]	4 [1]	65 [111]	6.15 [0.90]
	Week 15	71 [129]	5 [3]	76 [132]	6.58 [2.27]
	Week 16	47 [149]	1 [0]	48 [149]	2.08 [0.00]
	Week 17	73 [95]	0 [3]	73 [98]	0 [3.06]
	Week 18	65 [138]	5 [4]	70 [142]	7.14 [2.82]
	Week 19	61 [128]	2 [2]	63 [130]	3.17 [1.54]
	Week 20	85 [126]	1 [5]	86 [131]	1.16 [3.82]
	Week 21	76 [124]	1 [2]	77 [126]	1.3 [1.59]
	Week 22	48 [143]	1 [1]	49 [144]	2.04 [0.69]
	Week 23	96 [142]	1 [9]	97 [151]	1.03 [5.96]
	Week 24	56 [149]	0 [3]	56 [152]	0 [1.97]
	Total	801 [1572)	25 [35]	826 [1607]	3 [2]
		Mean = 64 [131]	Mean = 2.08 [2.91]	Mean = 68.83 [133.9]