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Table 1 Characteristics of respondents by year before and after propensity score (PS) matching

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

CovariateBefore PS matchAfter PS match
2010
(n = 1026)
2016
(n = 974)
P-value2010
(n = 823)
2016
(n = 823)
P-value
Gender
 Male437 (42.6)333 (34.2)< 0.001339 (41.2)311 (37.8)0.158
 Female589 (57.4)641 (65.8) 484 (58.8)512 (62.2) 
Age
 70–74317 (31)293 (30.1)0.108259 (31.5)248 (30.1)0.923
 75–79319 (31.2)264 (27.1) 255 (31)254 (30.9) 
 80–84249 (24.3)270 (27.7) 200 (24.3)209 (25.4) 
  ≥ 85138 (13.5)147 (15.1) 109 (13.2)112 (13.6) 
Living districts
 HK Islands210 (20.5)292 (30.1)< 0.001196 (23.8)229 (27.8)0.154
 Kowloon310 (30.2)357 (36.8) 302 (36.7)277 (33.7) 
 New Territories505 (49.3)320 (33) 325 (39.5)317 (38.5) 
Social Security Assistance
 No924 (90.1)863 (88.6)0.292743 (90.3)731 (88.8)0.334
 Yes102 (9.9)111 (11.4) 80 (9.7)92 (11.2) 
Medical insurance coverage
 No944 (93.5)913 (95.4)0.062769 (93.4)780 (94.8)0.250
 Yes66 (6.5)44 (4.6) 54 (6.6)43 (5.2) 
Living status
 Living with others799 (78.3)749 (76.9)0.467637 (77.4)614 (74.6)0.184
 Living alone222 (21.7)225 (23.1) 186 (22.6)209 (25.4) 
  1. Figures may not add up to total number of respondents because of missing data