Table 3 Comparison of background characteristics between exposed and unexposed groups, prior to and following propensity score matching
% prior to matching (n = 3,263) | % following matching (n = 3,227) | |||||
|---|---|---|---|---|---|---|
Exposed | Unexposed | p-value | Exposed | Unexposed | p-value | |
Age | ||||||
15-24 years (ref) | ||||||
25-34 years | 22 | 42 | 0.001 | 20 | 20 | 1.000 |
35-49 years | 32 | 34 | 0.399 | 33 | 33 | 1.000 |
Education | ||||||
None (ref) | ||||||
Primary | 36 | 52 | 0.001 | 36 | 36 | 1.000 |
Secondary or more | 64 | 15 | 0.001 | 63 | 63 | 1.000 |
Province | ||||||
Central, Copperbelt (ref) | ||||||
Eastern, Northern, Luapula | 30 | 45 | 0.001 | 30 | 30 | 0.955 |
Lusaka | 4 | 13 | 0.001 | 3 | 4 | 1.000 |
Western, Southern, North-Western | 35 | 35 | 0.853 | 36 | 36 | 1.000 |
Has a child under the age of 6 years | 60 | 66 | 0.005 | 60 | 60 | 1.000 |
Upper two wealth quintiles | 65 | 47 | 0.001 | 66 | 66 | 0.956 |
Lives in an IRS district | 84 | 90 | 0.001 | 86 | 86 | 1.000 |
Lives in an urban area | 28 | 17 | 0.001 | 28 | 28 | 0.953 |