Table 2 Prevalence of health conditions and risk factors for all households, and for landline Random Digit Dialling (RDD) and Directory-listed (EWP) telephone samples, 15 years and over

Health conditions

Diabetes

All households

229

7.5 (6.6–8.5)

246

8.1 (7.1–9.2)

247

8.5 (7.6–9.5)

Landline (RDD) sample

181

7.2 (6.2–8.3)

–0.009

195

8.3 (7.1–9.6)

0.003

173

8.3 (7.4–9.4)

−0.033

Directory-listed sample

133

7.1 (6.0–8.5)

−0.021

148

8.6 (7.1–10.3)

0.030

117

7.9 (6.7–9.4)

−0.077

Current asthma

All households

416

13.6 (12.2–15.3)

384

12.7 (11.4–14.0)

Landline (RDD) sample

335

13.3 (11.7–15.2)

−0.015

297

12.6 (11.1–14.2)

−0.002

Directory-listed sample

246

13.1 (11.3–15.2)

−0.061

220

12.8 (10.9–15.0)

−0.014

Arthritis

All households

653

21.4 (19.9–23.1)

727

24.0 (22.3–25.7)

656

21.5 (19.7–23.3)

640

22.0 (20.3–23.8)

Landline (RDD) sample

529

21.1 (19.5–22.8)

−0.025

554

23.5 (21.6–25.4)

−0.031

495

21.2 (19.3–23.2)

0.009

464

22.3 (20.4–24.4)

0.019

Directory-listed sample

387

20.7 (18.9–22.6)

−0.083

407

23.7 (21.4–26.1)

−0.018

346

20.7 (18.5–23.2)

−0.046

324

22.0 (19.7–24.4)

−0.016

Mental health condition

All households

330

10.8 (9.6–12.2)

359

11.8 (10.7–13.1)

297

9.7 (8.7–10.8)

384

13.2 (11.8–14.7)

Landline (RDD) sample

250

10.0 (8.6–11.5)

−0.100

275

11.6 (10.3–13.1)

−0.046

222

9.5 (8.2–10.9)

−0.025

256

12.3 (10.7–14.1)

−0.091

Directory-listed sample

167

8.9 (7.4–10.7)

−0.242

221

12.9 (11.0–15.0)

0.056

150

9.0 (7.6–10.6)

−0.102

172

11.6 (9.4–14.3)

−0.141

Health - related risk factors

Current smoker

All households

614

20.2 (18.3–22.1)

529

17.4 (15.8–19.2)

501

16.4 (14.8–18.2)

552

19.0 (16.6–21.6)

Landline (RDD) sample

429

17.1 (15.2–19.2)

−0.136

343

14.5 (12.8–16.5)

−0.191

304

13.0 (11.4–14.9)

−0.174

330

15.9 (13.6–18.6)

−0.138

Directory-listed sample

316

16.9 (14.7–19.3)

−0.129

223

13.0 (10.9–15.4)

−0.313

210

12.6 (10.8–14.7)

−0.181

202

13.7 (11.6–16.1)

−0.244

Obese

All households

611

22.1 (20.4–24.0)

612

22.7 (20.9–24.6)

621

23.4 (21.5–25.4)

603

23.1 (20.7–25.8)

Landline (RDD) sample

511

22.6 (20.7–24.6)

0.036

491

23.3 (21.2–25.5)

0.013

474

23.5 (21.4–25.8)

−0.020

454

24.3 (21.8–27.0)

0.078

Directory-listed sample

379

22.5 (20.3–25.0)

−0.002

359

23.8 (21.2–26.6)

0.059

329

22.7 (20.1–25.5)

−0.050

329

24.6 (21.6–27.9)

0.079