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Table 3 Univariate and multivariate analysis of “Whether the voucher can encourage the use of health services in private sector”

From: What is the long term impact of voucher scheme on primary care? Findings from a repeated cross sectional study using propensity score matching

    

Univariate Analysis

Multivariate Analysis

Variable

Total

No

(n = 773)

Yes

(n = 754)

Adjusted Odds ratio (95% CI)

P-value

Adjusted Odds ratio (95% CI)

P-value

Demographic

 Sex

  Male

650 (39.5)

295 (38.2)

316 (41.9)

1

 

1

 

  Female

996 (60.5)

478 (61.8)

438 (58.1)

0.81 (0.65–1.00)

0.052

0.78 (0.61–0.98)

0.032

 Age

  70–74

507 (30.8)

225 (29.1)

248 (32.9)

1

 

1

 

  75–79

509 (30.9)

239 (30.9)

242 (32.1)

0.92 (0.70–1.19)

0.514

0.94 (0.71–1.25)

0.667

  80–84

409 (24.8)

196 (25.4)

180 (23.9)

0.80 (0.60–1.06)

0.117

0.81 (0.60–1.10)

0.180

   ≥ 85

221 (13.4)

113 (14.6)

84 (11.1)

0.62 (0.43–0.88)

0.007

0.59 (0.40–0.85)

0.005

 Living districts

  HK Islands

425 (25.8)

231 (29.9)

164 (21.8)

1

 

1

 

  Kowloon

579 (35.2)

249 (32.2)

302 (40.1)

1.92 (1.46–2.54)

< 0.001

1.80 (1.34–2.42)

< 0.001

  New Territories

642 (39)

293 (37.9)

288 (38.2)

1.32 (1.00–1.75)

0.052

1.30 (0.96–1.76)

0.094

 Received social security assistance

  No

1474 (89.6)

708 (91.6)

657 (87.1)

1

 

1

 

  Yes

172 (10.4)

65 (8.4)

97 (12.9)

1.55 (1.10–2.20)

0.013

1.36 (0.93–2.01)

0.114

 Had health insurance coverage

  No

1549 (94.1)

714 (92.4)

724 (96)

1

 

1

 

  Yes

97 (5.9)

59 (7.6)

30 (4.0)

0.54 (0.34–0.87)

0.011

0.45 (0.27–0.77)

0.003

 Living status

  Living with others

1251 (76)

610 (78.9)

557 (73.9)

1

 

 

  Living alone

395 (24)

163 (21.1)

197 (26.1)

1.31 (1.02–1.68)

0.036

1.25 (0.94–1.66)

0.121

Health condition

 Doctor consultation in past one month

  No

479 (29.2)

210 (27.4)

233 (30.9)

1

 

 

  Yes

1160 (70.8)

557 (72.6)

520 (69.1)

0.93 (0.72–1.20)

0.583

  

 Hospitalization in the past one year

  No

1290 (78.9)

606 (78.8)

590 (78.9)

1

 

 

  Yes

344 (21.1)

163 (21.2)

158 (21.1)

0.90 (0.70–1.17)

0.436

  

 Health condition when compared with other people at the same age

  Better

611 (39.1)

292 (39.9)

282 (39.4)

1

 

 

  Fair

736 (47.1)

350 (47.8)

325 (45.5)

0.94 (0.74–1.18)

0.586

  

  Worse

216 (13.8)

90 (12.3)

108 (15.1)

1.09 (0.78–1.54)

0.603

  

 Had chronic disease

  No

327 (20)

160 (20.8)

139 (18.5)

1

 

 

  Yes

1310 (80)

608 (79.2)

612 (81.5)

0.95 (0.72–1.24)

0.684

  

 Usual source of care (prior to the use of vouchers)

  Public doctors only

446 (29.3)

238 (32.6)

185 (26.9)

1

 

1

 

  Private doctors only

332 (21.8)

173 (23.7)

130 (18.9)

0.95 (0.69–1.3)

0.752

0.95 (0.69–1.32)

0.778

  Both public and private doctors

743 (48.8)

320 (43.8)

373 (54.2)

1.31 (1.01–1.7)

0.041

1.28 (0.98–1.67)

0.069

  1. Both analyses were adjusted by year and recruitment site
  2. Figures may not add up to total number of respondents since we exclude those saying “don’t know”/"don’t remember” or missing;
  3. P-value in univariate analysis indicates the statistical significance of the outcome measure i.e. whether to encourage private health services use with each independent variable
  4. Only significant variables (except sex and age) in univariate analysis were put into multivariate analysis