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Table 1 Characteristics of Japanese women with newly diagnosed hip osteoarthritis caused by acetabular dysplasiaa
| Characteristics | n (%) or median (range) | ||
|---|---|---|---|
| Age (years) | (n = 336) | 57.7 (23.2–84.5) | |
| Height (cm) | (n = 336) | 153 (135–173) | |
| Weight at age 20 (kg) | (n = 320) | 50 (36–85) | |
| Weight at diagnosis (kg) | (n = 336) | 53 (31–105) | |
| Weight change between age 20 and diagnosis (kg) | (n = 320) | 4 (−28–40) | |
| Body mass index at age 20 (kg/m2) | (n = 320) | 20.9 (15.8–35.8) | |
| Body mass index at diagnosis (kg/m2) | (n = 336) | 22.8 (15.8–43.1) | |
| Body mass index change between age 20 and diagnosis (kg/m2) | (n = 320) | 1.6 (−13–16.7) | |
| Presence of comorbidity | Present | (n = 335) | 157 (47) |
| Smoking | Never | (n = 334) | 265 (79) |
| Past | 36 (11) | ||
| Current | 33 (10) | ||
| Consumption of alcohol | Never | (n = 333) | 202 (61) |
| Past | 15 (5) | ||
| Current | 116 (35) | ||
| Sports club activities at school | Present | (n = 334) | 155 (46) |
| Education | Junior high school | (n = 333) | 46 (14) |
| High school | 186 (56) | ||
| Junior college or higher | 101 (30) | ||
| Physical work | Present | (n = 331) | 27 (8) |
| Parity | Present | (n = 334) | 269 (81) |
| Clinical information | |||
| Involved side | Hemilateral | (n = 336) | 141 (42) |
| Bilateral | 195 (58) | ||
| Radiographic index of acetabular dysplasia | Sharp angle | (n = 255) | 46 (27–58) |
| Acetabular roof obliquity angle | (n = 252) | 23 (0–53) | |
| Acetabular head index (%) | (n = 253) | 65.5 (35.7–105.7) | |
| Duration since symptom onset (years) | (n = 330) | 2.0 (0–43.0) | |
| Disease stage at OA diagnosis | Pre-OA | (n = 336) | 43 (13) |
| Initial stage | 48 (14) | ||
| Advanced stage | 95 (28) | ||
| Terminal stage | 150 (45) |
