Table 3.

Diagnostic tests and management of jaundice

		Quartile of time from CT to surgery
	n	Q1 (n = 121)	Q4 (n = 124)	P §
Diagnostic tests
CT	245	121 (100)	124 (100)	–
Total no. of scans	245	122 (1·0 per patient)	229 (1·8 per patient)	< 0·001¶
EUS	245	22 (18·2)	92 (74·2)	< 0·001
Total no. of EUS scans	114†	24 (1·1 per patient)	133 (1·4 per patient)	0·024¶
Time from CT to first EUS (days)*	114†	13 (7–19)	38 (19–61)	< 0·001¶
Time from CT to diagnostic EUS (days)*	105†	13 (7–19)	59 (39–80)	< 0·001¶
MRI	226‡	22 of 107 (20·6)	40 of 119 (33·6)	0·036
PET	226‡	1 of 107 (0·9)	7 of 119 (5·9)	0·069
Management of jaundice
No. of patients with jaundice	245	107 (88·4)	112 (90·3)	0·682
ERCP	219	42 of 107 (39·3)	112 of 112 (100)	< 0·001
No. of patients having ERCP	219	29 of 107 (27·1)	84 of 112 (75·0)	< 0·001
Total no. of procedures	154†	46 (1·1 per patient)	142 (1·3 per patient)	0·103¶
PTC	219	6 of 107 (5·6)	23 of 112 (20·5)	0·001
Total no. of procedures	29†	6 (1·0 per patient)	39 (1·7 per patient)	0·058¶
PBD	219	45 of 107 (42·1)	112 of 112 (100)	< 0·001
No. of patients having PBD before referral	216‡	37 of 106 (34·9)	97 of 110 (88·2)	< 0·001
No. of patients with > 1 attempt at PBD	219	6 of 107 (5·6)	41 of 112 (36·6)	< 0·001
Total no. of procedures	157†	51 (1·1 per patient)	181 (1·6 per patient)	0·002¶
Time from CT to final PBD (days)*	157†	3 (0–8)	14 (2–46)	< 0·001¶

Values in parentheses are percentages unless indicated otherwise;

^*values are median (i.q.r.).

^†In the subgroup of patients for whom at least one procedure was performed.

^‡Excludes patients for whom details of additional imaging or timing of the earliest preoperative biliary drainage (PBD) were not available. EUS, endoscopic ultrasonography; ERCP, endoscopic retrograde cholangiopancreatography; PTC, percutaneous transhepatic cholangiography.

^§Fisher's exact test, except

^¶Mann–Whitney U test.