Table 1 Hazard ratio (HR) for clinical factors in the overall survival of lower-grade glioma

Age

261

1.07

1.05–1.09

5e⁻¹⁰

1.07

1.05–1.09

6e⁻⁹

 Female

117 [30]

1

 Male

144 [33]

0.88

0.54–1.45

0.620

 No

41 [24]

1

 Yes

220 [39]

0.80

0.47–1.35

0.398

 Undetected

166 [45]

1

 Detected

95 [18]

0.74

0.43–1.29

0.292

 Absent

181 [57]

1

1

 Present

80 [6]

0.35

0.15–0.83

0.016

0.09

0.01–0.58

0.012

 Astrocytoma

107 [27]

1

 Oligoastrocytoma/oligodendroglioma

154 [36]

0.67

0.40–1.10

0.112

 Grade II

77 [18]

1

1

 Grade III

184 [45]

2.06

1.18–3.61

0.011

1.52

0.85–2.71

0.159

 N.A.

1

 Left

131 [28]

1

 Midline

5 [1]

0.34

0.04–2.64

0.304

 Right

123 [33]

0.82

0.49–1.37

0.443

 N.A./other

3

1

 Supratentorial, frontal lobe

160 [36]

1

 Supratentorial, occipital lobe

5 [1]

0.71

0.10–5.20

0.736

 Supratentorial, parietal lobe

23 [4]

0.84

0.30–2.38

0.748

 Supratentorial, temporal lobe

70 [21]

1.86

1.08–3.22

0.026

1.22

0.70–2.11

0.481

Symptoms at diagnosis

 N.A./other

19

 Headaches

62 [18]

1

 Mental status changes

22 [8]

1.84

0.80–4.27

0.153

 Motor/movement changes

22 [6]

1.20

0.47–3.06

0.698

 Seizures

119 [23]

0.58

0.31–1.08

0.087

 Sensory changes

11 [2]

1.07

0.24–4.66

0.929

 Visual changes

6 [2]

0.69

0.16–2.98

0.617