Table 2.
SA‐1: Patient characteristics of the PS‐matched subgroup in the supplementary analysis
| IGRT (n = 192) | non‐IGRT (n = 192) | Standardized difference (rounded)* | ||||
|---|---|---|---|---|---|---|
| Number or mean (sd) § | (%) § | Number or mean (sd) § | (%) § | |||
| Age | <65 | 95 | (49) | 106 | (55) | 0.12 |
| ≥65 | 97 | (51) | 86 | (45) | ||
| Gender | Female | 45 | (23) | 47 | (24) | 0.02 |
| Male | 147 | (77) | 145 | (76) | ||
| Residency | Non‐north | 128 | (67) | 134 | (70) | 0.07 |
| North | 64 | (33) | 58 | (30) | ||
| Social economic status | No more than minimum wage | 50 | (26) | 60 | (31) | 0.12 |
| Higher | 142 | (74) | 132 | (69) | ||
| Comorbidity | Without | 104 | (54) | 106 | (55) | 0.02 |
| With † | 88 | (46) | 86 | (45) | ||
| Clinical stage | 3A | 56 | (29) | 62 | (32) | 0.07 |
| 3B | 136 | (71) | 130 | (68) | ||
| Histology | NSCLC | 155 | (81) | 155 | (81) | 0 |
| SCLC | 37 | (19) | 37 | (19) | ||
| Tumor location | Lower | 48 | (25) | 47 | (24) | 0.01 |
| Upper/middle | 144 | (75) | 145 | (76) | ||
| RT delivery | 3DCRT | ‡ | ‡ | ‡ | ‡ | 0.05 |
| IMRT | ‡ | ‡ | ‡ | ‡ | ||
| Peri‐CCRT Systemic therapy | Without | 110 | (57) | 108 | (56) | 0.02 |
| With | 82 | (43) | 84 | (44) | ||
| RT break | ≤1 week | 139 | (72) | 139 | (72) | 0 |
| >1 week | 53 | (28) | 53 | (28) | ||
| RT dose | 61.98 (6.12) | 61.53 (6.03) | 0.07 | |||
| BMI | 23.60 (3.84) | 23.79 (3.66) | 0.05 | |||
| Drinking | No | 126 | (66) | 122 | (64) | 0.04 |
| Yes | 66 | (34) | 70 | (36) | ||
| Betel nut chewing | No | 159 | (83) | 157 | (82) | 0.03 |
| Yes | 33 | (17) | 35 | (18) | ||
| Smoking | No | 57 | (30) | 60 | (31) | 0.03 |
| Yes | 135 | (70) | 132 | (69) | ||
| Performance status | 0–1 | 179 | (93) | 184 | (96) | 0.12 |
| 2 | 13 | (7) | 8 | (4) | ||
| Use of PET | No | 106 | (55) | 103 | (54) | 0.03 |
| Yes | 86 | (45) | 89 | (46) | ||
| Tumor size (mm) | 56.36 (24.42) | 54.49 (24.75) | 0.08 | |||
3DCRT, 3D conformal radiotherapy; BMI, body mass index; CCRT, concurrent chemoradiotherapy; IGRT, image‐guided radiotherapy; IMRT, intensity‐modulated radiotherapy; NSCLC, non‐small cell lung cancer; PET, positron emission tomography; PSW, propensity‐score weighting; RT, radiotherapy; SCLC, small cell lung cancer; sd, standard deviation.
†
Modified Carlson comorbidity score ≥ 1.
‡
The exact numbers were not reported because of a Health and Welfare Data Science Center (HWDC) database center policy to avoid numbers in single cells (≤2).
§
Rounded.