Recommended National diagnostic reference levels for adult abdomino-pelvic computed tomography examinations in Ethiopia

Table 3 Regression analysis of dose indicators patient weight with same CT scanners

Patient weight of facilities, r_s (P-value)
Dose indicators	BMY (Philips)	BZH (Philips)	TAH (Philips)	HUCSH (Philips)	AlertH (Philips)	THH (Philips)
CTDI_vol	0.79 (0.894)	0.59 (0.819)	0.7 (0.802)	0.44 (0.018)**	0.67 (0.292)	0.37 (0.900)
TDLP	0.81 (0.018)**	0.6 (0.273)	0.71 (0.276)	0.12 (0.555)	0.74 (0.761)	0.40 (0.518)

Patient Weight of Facilities, r_s(P-value)
Dose indicators	AdamaG (Siemens)	ADMC (Siemens)	DUGH (afar) (Siemens)	DCHOH (Siemens)	GH (Siemens)	YerH (Siemens)	WUDC (Siemens)	ALGH (Siemens)
CTDI_vol	0.51 (0.137)	0.561 (0.001)*	0.48 (0.024)**	0.635 (0.097)	0.783 (0.004)*	0.955 (0.467)	0.566 (0.950)	1.00 (0.000)*
TDLP	0.59 (0.053)	0.559 (0.001)*	0.30 (0.089)	0.576 (0.345)	0.632 (0.013)**	0.362 (0.032)**	0.784 (0.000)*	0.814 (0.000)*

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