Background
Methods
Data source
Study population and study design
Other explanatory covariables
Statistical analysis
Supplementary analysis
Results
Identification of the study population used in the primary analysis
Surgery | CCRT | Standardized differencea | ||||
---|---|---|---|---|---|---|
Number or mean (sd)a | (%)a | Number or mean (sd)a | (%)a | |||
Age | 56.93 (8.65) | 57.26 (10.48) | 0.04 | |||
Gender | Female | 8 | (5) | 7 | (5) | 0.03 |
Male | 141 | (95) | 142 | (95) | ||
Residency | Non-north | 101 | (68) | 100 | (67) | 0.01 |
North | 48 | (32) | 49 | (33) | ||
Tumor size | ≤ 5 cm | 59 | (40) | 60 | (40) | 0.01 |
> 5 cm | 90 | (60) | 89 | (60) | ||
Differentiation | Poorly/undifferentiated | 46 | (31) | 53 | (36) | 0.10 |
Well/moderately | 103 | (69) | 96 | (64) | ||
RT delivery | Non-IGRT | 131 | (88) | 128 | (86) | 0.06 |
IGRT | 18 | (12) | 21 | (14) | ||
Institution | Low volume | 50 | (34) | 54 | (36) | 0.06 |
High volume | 99 | (66) | 95 | (64) | ||
Period | 2008–2009 | 18 | (12) | 19 | (13) | 0.02 |
2010–2015 | 131 | (88) | 130 | (87) | ||
Location | Cervical | 1 | (1) | 1 | (1) | 0.00 |
Noncervical | 148 | (99) | 148 | (99) |
Primary analysis
Supplementary analyses
Surgery | CCRT | Standardized differencea | ||||
---|---|---|---|---|---|---|
Number or mean (sd)a | (%)a | Number or mean (sd)a | (%)a | |||
Age | 57.00 (7.63) | 56.61 (9.62) | 0.05 | |||
Gender | Female | 6 | (5) | 3 | (3) | 0.14 |
Male | 104 | (95) | 107 | (97) | ||
Residency | Non-north | 76 | (69) | 80 | (73) | 0.08 |
North | 34 | (31) | 30 | (27) | ||
Tumor size | ≤ 5 cm | 43 | (39) | 42 | (38) | 0.02 |
> 5 cm | 67 | (61) | 68 | (62) | ||
Differentiation | Poorly/undifferentiated | 41 | (37) | 42 | (38) | 0.02 |
Well/moderately | 69 | (63) | 68 | (62) | ||
RT delivery | Non-IGRT | 94 | (85) | 96 | (87) | 0.05 |
IGRT | 16 | (15) | 14 | (13) | ||
Institution | Low volume | 40 | (36) | 45 | (41) | 0.09 |
High volume | 70 | (64) | 65 | (59) | ||
Use of PET | Without | 12 | (11) | 12 | (11) | 0.00 |
With | 98 | (89) | 98 | (89) | ||
Location | Cervical | 1 | (1) | 1 | (1) | 0.00 |
Noncervical | 109 | (99) | 109 | (99) |
Surgery [MIE] | CCRT | Standardized differencea | ||||
---|---|---|---|---|---|---|
Number or mean (sd)a | (%)a | Number or mean (sd)a | (%)a | |||
Age | 56.38 (8.21) | 55.35 (10.58) | 0.11 | |||
Gender | Female | 4 | (5) | 4 | (5) | 0.00 |
Male | 78 | (95) | 78 | (95) | ||
Residency | Non-north | 57 | (70) | 52 | (63) | 0.13 |
North | 25 | (30) | 30 | (37) | ||
Tumor size | ≤ 5 cm | 31 | (38) | 31 | (38) | 0.00 |
> 5 cm | 51 | (62) | 51 | (62) | ||
Differentiation | Poorly/undifferentiated | 31 | (38) | 30 | (37) | 0.03 |
Well/moderately | 51 | (62) | 52 | (63) | ||
RT delivery | Non-IGRT | 70 | (85) | 68 | (83) | 0.07 |
IGRT | 12 | (15) | 14 | (17) | ||
Institution | Low volume | 23 | (28) | 25 | (30) | 0.05 |
High volume | 59 | (72) | 57 | (70) | ||
Use of PET | Without | 7 | (9) | 11 | (13) | 0.16 |
With | 75 | (91) | 71 | (87) |