. Author manuscript; available in PMC: 2008 Aug 18.

Published in final edited form as: Clin Biomech (Bristol, Avon). 2007 Jun 28;23(5):653–661. doi: 10.1016/j.clinbiomech.2007.05.006

Table 2.

Mid foot force and pressure variables for DM+PN involved feet

Calcaneal BMD (mg/cm²)	Medial column phenotype (n = 15)							Lateral column phenotype (n = 11)
	Mean		99% CI (LL)			99% CI (UL)		Mean		99% CI (LL)		99% CI (UL)		P-value
	365		274			456		461		359		563		0.02
	Medial mid foot mask			Lateral mid foot mask				Medial mid foot mask			Lateral mid foot mask
	Mean	99%CI (LL)	99% CI (UL)	Mean	99% CI (LL)	99% CI (UL)	P-value	Mean	99% CI (LL)	99% CI (UL)	Mean	99% CI (LL)	99% CI (UL)	P-value
Maximum
Vertical force (N)	280	186	374	462	337	587	0.00^a	79	0	170	414	270	558	0.00^a,^b,^c
Force time integral (N s)	131	52	210	231	158	304	0.00^a	29	0	63	203	116	290	0.00^a,^b,^c
Peak pressure (N/cm²)	74	46	101	84	57	112	NS^a	12	0	26	59	33	85	0.00^a,^b,^c,^d
Pressure time integral [(N/cm²) s]	34	17	52	42	25	60	NS^a	6	0	13	28	12	43	0.00^a,^b,^c
Contact area (cm²)	23	16	30	31	26	36	NS^a	11	1	21	30	23	37	0.00^a,^b,^c
Contact time (ms)	875	651	1099	928	688	1168	NS^a	484	246	721	787	624	951	0.00^a,^b,^c

Mean and 99% confidence interval lower limit [CI (LL)] – confidence interval upper limit [CI (UL)]. n Represents the number of feet involved. P-value is Bonferroni corrected pairwise probability after significant t test for independent samples.

Medial mid foot mask vs lateral mid foot mask within a phenotype.

medial mid foot mask vs medial mid foot mask between phenotypes.

medial mid foot mask vs lateral mid foot mask between phenotypes.

lateral mid foot mask vs lateral mid foot mask between phenotypes.