Table 4.

Peak plantar pressure during walking at different regions of the foot for all participants and for the groups with and with no future ulceration occurrence

Continuous parameter	All			No-ulcer occurrence			With ulcer occurrence			Survival analysis Cox univariate regression		Mann-Whitney U test	Univariate logistic regression
	Median	Range	n‡	Median	Range	n‡	Median	Range	n‡	HR (95% CI)*	P- survival analysis *	P-differences†	OR (95% CI)‡	P-value logistic regression‡
Plantar pressure at hallux (kPa)	250	758	1810	250	758	1687	255	688	123	0.999 (0.998 to 1.001)	0.446	0.966	1.000 (0.998 to 1.001)	0.656
Plantar pressure at second toe (kPa)	130	695	1810	128	695	1687	135	415	123	1.001 (0.998 to 1.003)	0.458	0.501	1.001 (0.999 to 1.003)	0.324
Plantar pressure at third toe (kPa)	85	448	1810	85	448	1687	88	368	123	1.000 (0.997 to 1.003)	0.825	0.892	1.000 (0.997 to 1.004)	0.808
Plantar pressure at fourth toe (kPa)	58	355	1810	58	355	1687	57	223	123	0.996 (0.992 to 1.001)	0.092	0.286	0.997 (0.993 to 1.002)	0.269
Plantar pressure at fifth toe (kPa)	30	248	1810	30	248	1687	23	170	123	0.990 (0.983 to 0.998)	0.011	0.008	0.991 (0.983 to 0.998)	0.005
Plantar pressure first MTH (kPa)	158	758	1810	158	758	1687	158	475	123	1.003 (1.001 to 1.005)	0.015	0.217	1.001 (0.999 to 1.003)	0.366
Plantar pressure at second MTH (kPa)	203	605	1810	203	605	1687	208	543	123	1.001 (0.998 to 1.003)	0.556	0.307	1.002 (0.999 to 1.004)	0.219
Plantar pressure at third MTH (kPa)	225	911	1810	225	911	1687	223	665	123	1.000 (0.998 to 1.002)	0.987	0.859	1.001 (0.999 to 1.004)	0.326
Plantar pressure at fourth MTH (kPa)	213	883	1810	213	883	1687	208	645	123	1.000 (0.997 to 1.002)	0.862	0.843	1.001 (0.998 to 1.003)	0.595
Plantar pressure at fifth MTH (kPa)	183	1000	1810	183	788	1687	178	980	123	1.000 (0.999 to 1.002)	0.707	0.439	1.000 (0.999 to 1.002)	0.753
Plantar pressure at lateral midfoot (kPa)	78	410	1810	78	410	1687	76	305	123	0.999 (0.993 to 1.005)	0.660	0.408	0.998 (0.992 to 1.003)	0.425
Plantar pressure at center of midfoot (kPa)	105	365	1810	105	353	1687	98	353	123	0.997 (0.992 to 1.001)	0.105	0.419	1.000 (0.996 to 1.004)	0.871
Plantar pressure at medial midfoot (kPa)	68	215	1810	68	215	1687	65	140	123	0.998 (0.990 to 1.005)	0.591	0.310	0.996 (0.989 to 1.003)	0.284
Plantar pressure at lateral hindfoot (kPa)	110	293	1810	110	293	1687	100	215	123	0.998 (0.993 to 1.003)	0.496	0.018	0.994 (0.989 to 1.000)	0.034
Plantar pressure at center of hindfoot (kPa)	165	458	1810	165	458	1687	170	245	123	0.998 (0.994 to 1.002)	0.430	0.896	1.000 (0.996 to 1.004)	0.992
Plantar pressure at medical hind foot (kPa)	115	420	1810	115	420	1687	113	215	123	1.001 (0.997 to 1.005)	0.635	0.279	0.997 (0.993 to 1.002)	0.228

P values <0.05 indicate a significant association and are shown in bold in the table.

*Based on univariate Cox survival analysis.

†Mann-Whitney U test.

‡Based on univariate logistic regression.

MTH, metatarsal head.