Table 2.
Frequency of Foot Disorders or Foot Conditions by Race and adjusted Odds Ratios and 95% Confidence Intervals for Main Effects and for BMI subgroups, Johnston County Osteoarthritis Project Participants Attending Foot Examination Between 2006 and 2010.
| Total Sample N=1,691 |
African Americans N=528 (31.2%) |
Caucasians N=1,163 (68.8%) |
Unadjusted Odds Ratio (95% Confidence Interval |
Adjusted* Odds Ratio (95% Confidence Interval) |
||
|---|---|---|---|---|---|---|
| Hallux Valgus, n/N (%) | 1088/1691 (64.3) | 371/528 (70.3) | 717/1163 (61.7) | 1.47 (1.18–1.83) | - | |
| Non-obese, n/N (%) | 535/818 (62.3) | 149/198 (75.3) | 386/620 (62.3) | - | 2.01 (1.39–2.92) † | |
| Obese, n/N (%) | 553/872 (63.4) | 222/330 (67.3) | 331/542 (61.1) | - | 1.33 (0.98–1.80) † | |
| Hammer Toes, n/N (%) | 597/1691 (35.3) | 219/528 (41.5) | 378/1163 (32.5) | 1.47 (1.19–1.82) | - | |
| Non-obese, n/N (%) | 292/818 (35.7) | 103/198 (52.0) | 189/620 (30.5) | - | 2.64 (1.88–3.70) † | |
| Obese, n/N (%) | 305/872 (34.9) | 116/330 (35.2) | 189/542 (34.9) | - | 1.12 (0.83–1.51) † | |
| Overlapping Toes n/N (%) | 578/1691 (34.2) | 190/528 (36.0) | 388/1163 (33.4) | 1.12 (0.91–1.39) | - | |
| Non-obese, n/N (%) | 296/818 (36.2) | 85/198 (42.9) | 211/620 (34.0) | - | 1.53 (1.09–2.13) † | |
| Obese, n/N (%) | 282/872 (32.3) | 105/330 (31.8) | 177/542 (32.7) | - | 0.94 (0.70–1.28) † | |
| Pes Planus n/N (%) | 391/1691 (23.1) | 202/528 (38.3) | 189/1163 (16.3) | 3.19 (2.53–4.04) | 2.94 (2.31–3.75) | |
| Morton’s Neuroma n/N (%) | 160/1691 (9.5) | 55/528 (10.4) | 105/1163 (9.0) | 1.17 (0.83–1.65) | 1.03 (0.72–1.47) | |
| Tailor’s Bunions n/N (%) | 106/1691 (6.3) | 8/528 (1.5) | 98/1163 (8.4) | 0.17 (0.08–0.35) | 0.18 (0.09–0.37) | |
| Plantar Fasciitis n/N (%) | 89/1691 (5.3) | 31/528 (5.9) | 58/1163 (5.0) | 1.19 (0.76–1.89) | 0.98 (0.62–1.57) | |
| Pes Cavus n/N (%) | 79/1691 (4.7) | 8/528 (1.5) | 71/1163 (6.1) | 0.24 (0.11–0.50) | 0.28 (0.13–0.59) | |
| Claw Toes n/N (%) | 55/1691 (3.3) | 21/528 (4.0) | 34/1163 (2.9) | 1.38 (0.79–2.39) | 1.57 (0.89–2.78) | |
*
Adjusted for age, gender, body mass index, and education; reference = Caucasian.
†
Adjusted for age, gender, and education; statistically significant (p<0.10) interaction of race and body mass index (non-obese vs. obese). P-value for statistically significant interactions: hallux valgus=0.06, hammer toes=0.06, and overlapping toes=0.01.