Table 6 Multivariate analysis for falls about KOA

Age, yrs:

  < 65 years

ref

ー

1.26

ref

ー

1.26

 65–74 years

0.97 (0.64–1.47)

0.8759

0.98 (0.63–1.54)

0.9399

  ≥ 75 years

1.14 (0.69–1.89)

0.6131

1.17 (0.69–2.00)

0.5574

Gender:

 Male

ref

–

1.11

ref

–

1.12

 Female

1.06 (0.76–1.50)

0.7197

1.04 (0.72–1.48)

0.8466

BMI:

  < 18.5

1.48 (0.57–3.79)

0.4184

1.07

1.35 (0.49–3.73)

0.5673

1.07

 18.5–24.9

ref

–

ref

–

 25.0–29.9

1.16 (0.83–1.62)

0.404

1.26 (0.89–1.78)

0.1999

  ≥ 30

0.51 (0.19–1.39)

0.1896

0.52 (0.19–1.41)

0.1963

Sleeping pill use:

 Absence

ref

–

1.14

ref

–

1.15

 Presence

0.71 (0.45–1.12)

0.1412

0.63 (0.39–1.27)

0.0555

Knee pain:

 No

ref

–

1.23

ref

–

1.23

 Mild

1.53 (1.04–2.25)

0.0310

1.58 (1.05–2.37)

0.0310

 Moderate

1.69 (1.03–2.79)

0.0389

1.78 (1.03–3.07)

0.0381

 Severe

2.98 (1.67–5.30)

0.0002

2.81 (1.55–5.30)

0.0007

Knee crepitus:

 Absence

ref

–

1.18

ref

–

1.19

 Presence

0.84 (0.59–1.22)

0.3611

0.88 (0.60–1.27)

0.4912

CESD–10:

 Not depressive

ref

–

1.13

ref

–

1.13

 Depressive

1.91 (1.25–2.92)

0.003

2.11 (1.36–3.29)

0.0009

TUG:

 Normal mobility

ref

–

1.17

ref

–

1.18

 Decreased mobility

1.70 (1.08–2.69)

0.0224

1.64 (1.03–2.61)

0.0385

OLST:

 Normal balance

ref

–

1.18

ref

–

1.18

 Balance disability

1.35 (0.89–2.06)

0.161

1.49 (0.97–2.29)

0.0708

Radiographic KOA severity:

 No OA

ref

–

1.29

–

–

1.31

 Mild OA

0.81 (0.44–1.50)

0.5076

ref

–

 Severe OA

1.10 (0.57–2.14)

0.77

1.33 (0.92–1.94)

0.1305