Table 4.
Distribution of background characteristics in the dataset matched by means of fingerprints compared to three datasets of records matched using conventional personal identifiers
|
Variable |
Matched on fingerprint (n = 623) |
Matched with scenario 6 (n = 492) |
Matched with scenario 16 (n = 551) |
Matched with scenario 17 (n = 552) |
||||
|---|---|---|---|---|---|---|---|---|
| n (%) | n (%) | p -value * | n (%) | p -value * | n (%) | p -value * | ||
|
Sex |
|
|
|
|
|
|
|
|
| |
Female |
511 (82.0) |
395 (80.3) |
|
445 (80.8) |
|
447 (81.0) |
|
| |
Male |
112 (18.0) |
97 (19.7) |
0.460 |
106 (19.2) |
0.579 |
105 (19.0) |
0.645 |
|
Age |
|
|
|
|
|
|
|
|
| |
18-34 |
334 (53.6) |
284 (57.7) |
|
308 (55.9) |
|
308 (55.8) |
|
| |
35-49 |
125 (20.1) |
100 (20.3 |
|
112 (20.3) |
|
115 (20.8) |
|
| |
50-64 |
89 (14.3) |
66 (13.4) |
|
78 (14.2) |
|
77 (14.0) |
|
| |
65+ |
75 (12.0) |
42 (8.5) |
0.240 |
53 (9.6) |
0.601 |
52 (9.4) |
0.528 |
|
Ethnicity |
|
|
|
|
|
|
|
|
| |
Other |
96 (15.4) |
67 (13.6) |
|
76 (13.8) |
|
75 (13.6) |
|
| |
South African |
527 (84.6) |
425 (86.4) |
0.401 |
475 (86.2) |
0.434 |
477 (86.4) |
0.377 |
|
Residence status |
|
|
|
|
|
|
|
|
| |
Permanent |
574 (92.1) |
450 (91.5) |
|
506 (91.8) |
|
507 (91.8) |
|
| |
Temporary and other |
48 (7.7) |
42 (8.5) |
0.595 |
45 (8.2) |
0.617 |
45 (8.2) |
0.618 |
|
Highest level of education |
|
|
|
|
|
|
|
|
| |
None |
97 (15.6) |
54 (11.0) |
|
71 (12.9) |
|
69 (12.5) |
|
| |
Some primary |
191 (30.7) |
144 (29.3) |
|
164 (29.8) |
|
166 (30.1) |
|
| |
Post primary |
302 (48.5) |
267 (54.3) |
0.098 |
288 (52.3) |
0.491 |
288 (52.2) |
0.426 |
|
Employment |
|
|
|
|
|
|
|
|
| |
Not working |
514 (82.5) |
413 (83.9) |
|
462 (83.4) |
|
460 (83.3) |
|
| |
Working |
93 (14.9) |
70 (14.2) |
0.660 |
79 (14.3) |
0.643 |
81 (14.7) |
0.795 |
|
Wealth quintile |
|
|
|
|
|
|
|
|
| |
Lowest |
44 (7.1) |
28 (5.7) |
|
33 (6.0) |
|
34 (16.2) |
|
| |
Second |
84 (13.5) |
62 (12.6) |
|
75 (13.6) |
|
73 (13.2) |
|
| |
Middle |
125 (20.1) |
100 (20.3) |
|
108 (19.6) |
|
110 (19.9) |
|
| |
Fourth |
172 (27.6) |
136 (27.6) |
|
152 (27.6) |
|
150 (21.2) |
|
| Highest | 184 (29.5) | 159 (32.3) | 0.753 | 174 (31.58) | 0.912 | 175 (31.7) | 0.952 | |
*p-value using chi-squared test computed separately for records in each scenario compared to records matched by means of fingerprints.