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. 2020 Mar 30;20:260. doi: 10.1186/s12885-020-06738-z

Table 1.

Baseline Characteristics of Study Population

Variable All aNSCLC patients aNSCLC patients who received a mutation test aNSCLC patients who did not receive a mutation test p-values Mutation-positive aNSCLC patients aNSCLC patients without a test or with negative test result p-values
N 1741 458 1283 458 vs. 1283 patients 122 1619 122 vs. 1619 patients
Age at index date
 Mean 66 97 66 51 67·13 0.441 66 17 67·03 0·633
 (Median | SD) (68 |10.20) (68 | 10.41) (68 | 10.13) (69 | 11.35) (68 | 10.11)
Gender
 Female, N (%) 520 (29·87) 176 (38·43) 344 (26·81) < 0.001 56 (45·90) 464 (28·66) < 0.001
TNM status at index date1
 IIIB2 (%) 32·17 31·00 32·58 0·535 26·23 32·61 0·146
 IV2 (%) 43 71 43 45 43 80 0·896 41·80 43·85 0·660
 IIIB and IV2 (%) 24·12 25·55 23·62 0·407 31 ·97 23·53 0 ·036
At least 1 all-cause hospitalization in baseline2
 % of patients 75.99 71·18 77·71 0·005 67·21 76·65 0·019
Number of chronic drugs2,3
 Mean 4·70 4·43 4·69 0·767 4·87 4·68 0·886
 (Median | SD) (4 | 3·91) (4 | 4·89) (4 | 3·92) (4 |4·29) (4 |3·88)
Charlson Comorbidity Index (CCI) 2
 Mean 9·91 9·71 9·98 0·078 9·66 9·93 0·053
 (Median | SD) (10 | 2·75) (9 | 2·90) (10 | 2) (9 | 2·62) (10 | 2·76)

Legend: Table 1 describes baseline characteristics of observed incident aNSCLC patients as well as those of subgroups based on mutation testing and results of the mutation testing

1TNM stage IIIB ICD-10 codes: C34.8, C.77.0/.1/.2/.3/.4/.5/.8; TNM stage IV ICD-10 codes: C78.X-C79.X; IIIB and IV: Patients who received which had both diagnoses on the same day or within 30 days

2Based on 12 months baseline period

3Defined as at least 2 different prescriptions per ATC class in baseline period