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. Author manuscript; available in PMC: 2017 Mar 7.
Published in final edited form as: Stat Med. 2013 Oct 24;33(7):1205–1221. doi: 10.1002/sim.6020

Table 1.

Baseline distributions of patients’ characteristics before and after the (baseline) propensity score matching

Unmatched (n=797,826) PS Matched (n=231,938)
Non-FMG (n=675,102) FMG (n=122,724) Standardized difference Non-FMG (n=115,969) FMG (n=115,969) Standardized difference
Proportion
Age < 1 0.0002 0.0004 -0.0526 0.0002 0.0003 −0.0244
1–4 0.0012 0.0011 0.0011 0.0011
5–9 0.0018 0.0017 0.0017 0.0018
10–14 0.0017 0.0019 0.0015 0.0019
15–19 0.0026 0.0030 0.0027 0.0030
20–24 0.0043 0.0051 0.0047 0.0049
25–29 0.0056 0.0065 0.0061 0.0063
30–34 0.0078 0.0086 0.0083 0.0083
35–39 0.0141 0.0151 0.0148 0.0148
40–44 0.0232 0.0250 0.0250 0.0248
45–49 0.0349 0.0379 0.0363 0.0373
50–54 0.0498 0.0527 0.0526 0.0523
55–59 0.0685 0.0707 0.0705 0.0708
60–64 0.0758 0.0777 0.0771 0.0784
65–69 0.1346 0.1393 0.1372 0.1412
70–74 0.2293 0.2223 0.2264 0.2249
75–79 0.1731 0.1707 0.1721 0.1713
80–84 0.1061 0.1023 0.1021 0.1009
>= 85 0.0654 0.0580 0.0596 0.0556
Sex (male) 0.4392 0.4432 0.0081 0.4418 0.4436 0.0035
Region residing University region 0.3933 0.2414 −0.3307 0.2341 0.2367 0.0061
Peripheral region 0.3750 0.4416 0.1359 0.4578 0.4487 −0.0184
Intermediate region 0.1887 0.2658 0.1848 0.2591 0.2620 0.0066
Remote region 0.0429 0.0510 0.0383 0.0490 0.0526 0.0167
Nordic region 0.0001 0.0001 −0.0019 0.0000 0.0001 0.0069
Material Deprivation Index 1. Most privileged 0.1758 0.1318 −0.1222 0.1319 0.1321 0.0005
2. 0.1825 0.1797 −0.0073 0.1800 0.1797 −0.0010
3. 0.2051 0.2332 0.0680 0.2341 0.2332 −0.0023
4. 0.2188 0.2378 0.0453 0.2374 0.2375 0.0002
5. Most deprived 0.2178 0.2175 −0.0007 0.2165 0.2176 0.0026
Hypertension 0.3547 0.2492 −0.2313 0.2603 0.2517 −0.0198
Diabetes 0.1633 0.1762 0.0344 0.1658 0.1785 0.0336
COPD 0.0653 0.0734 0.0319 0.0637 0.0735 0.0388