Table 3.

Median Weight Percentages in CRPS patients vs pain-free Controls, Chicago, 2007–08

	CRPS (N = 20)		Control (N = 15)		Difference of medians*
	Median (%TFA)	95% CI	Median (%TFA)	95% CI	Diff.	95% CI	P value†
Omega-6 HUFA
20:3n−6 (DGLA)	1.83	1.64, 1.96	1.59	1.48, 1.96	0.15	−0.17, 0.40	0.40
20:4n−6 (AA)	6.21	5.69, 7.17	7.17	5.98, 7.90	−0.64	−1.55, 0.41	0.18
22:4n−6 (DTA)	0.37	0.34, 0.41	0.33	0.25, 0.40	0.05	−0.02, 0.12	0.17
Total n6 HUFA	8.47	7.70, 9.33	9.04	7.70, 10.51	−0.43	−1.61, 0.69	0.47
Omega-3 HUFA
20:5n−3 (EPA)	0.42	0.34, 0.50	0.46	0.37, 0.78	−0.09	−0.30, 0.06	0.24
22:5n−3 (DPA)	0.73	0.60, 0.93	0.97	0.68, 1.12	−0.20	−0.40, −.02	0.03
22:6n−3 (DHA)	2.56	2.11, 2.71	2.71	2.47, 3.18	11.45	−21.87, 47.15	0.13
Total n3 HUFA	3.55	3.16, 3.94	4.42	3.59, 4.96	−0.84	−1.47, 0.04	0.03
HUFA Precursors
18:2n−6 (LA)	23.20	19.51, 24.59	23.27	22.82, 25.54	−1.99	−4.39, 0.35	0.16
18:3n−6 (GLA)	0.28	0.22, 0.40	0.20	0.16, 0.27	0.08	0.01, 0.19	0.04
18:3n−3 (ALA)	0.53	0.46, 0.57	0.46	0.38, 0.65	0.03	−0.09, 0.15	0.63
Total MUFA	23.56	22.58, 25.62	21.97	20.28, 22.68	2.40	0.75, 3.93	<0.01
Total SFA	38.13	37.46, 39.64	38.75	37.87, 39.37	−0.20	−1.43, 1.47	0.69
18C trans FA	0.76	0.67, 0.95	0.64	0.50, 0.82	0.13	−0.07, 0.35	0.22
Total HUFA	11.90	10.87, 13.91	13.39	11.95, 15.34	−1.15	−2.71, 0.21	0.10

^*The Hodges–Lehmann test was used to provide the difference between the medians with confidence intervals.

^†P values are based on the Wilcoxon rank-sum test.

HUFA = highly unsaturated fatty acid; DGLA = dihomo-gamma-linolenic acid; AA = arachidonic acid; DTA = docosatetraenoic acid; EPA = eicosapentaenoic acid; DPA = docosapentaenoic acid; DHA = docosahexaenoic acid; LA = linoleic acid; GLA = gamma-linolenic acid; ALA = alpha-linolenic acid; MUFA = mono-unsaturated fatty acids; SFA = saturated fatty acids.