1naresh

Array
(
    [urn:ac.highwire.org:guest:identity] => Array
        (
            [runtime-id] => urn:ac.highwire.org:guest:identity
            [type] => guest
            [service-id] => ajnr-ac.highwire.org
            [access-type] => Controlled
            [privilege] => Array
                (
                    [urn:ac.highwire.org:guest:privilege] => Array
                        (
                            [runtime-id] => urn:ac.highwire.org:guest:privilege
                            [type] => privilege-set
                            [privilege-set] => GUEST
                        )

                )

            [credentials] => Array
                (
                    [method] => guest
                )

        )

)
1nareshArray
(
    [urn:ac.highwire.org:guest:identity] => Array
        (
            [runtime-id] => urn:ac.highwire.org:guest:identity
            [type] => guest
            [service-id] => ajnr-ac.highwire.org
            [access-type] => Controlled
            [privilege] => Array
                (
                    [urn:ac.highwire.org:guest:privilege] => Array
                        (
                            [runtime-id] => urn:ac.highwire.org:guest:privilege
                            [type] => privilege-set
                            [privilege-set] => GUEST
                        )

                )

            [credentials] => Array
                (
                    [method] => guest
                )

        )

)

Table 1: Patient demographic and clinical characteristics^{^a}
Aggressive Tumor Nonaggressive Tumor P Value
No. 6 10 
Volume change ratio 14.4 ± 21.0 (−2.18–17.2) 0.463 ± 1.135 (−1.40–3.78) .003
Doubling time (mo) 5.77 ± 4.03 (0.73–10.8) NA 
Age at first operation (yr) 54.3 ± 9.9 45.8 ± 24.3 .713
Location of tumor (ratio of clival chordoma to all) 3/6 8/10 .299^{^b}
Postsurgical RT radiation dose (Gy) 72.4 ± 33.5 (n = 4) 74.2 ± 10.9 (n = 7) .927
Ratio of patients with postsurgical RT to all 4/6 9/10 .518^{^b}
Time from first operation to first follow-up MRI (mo) 62.8 ± 53.3 71.4 ± 76.2 >.99
Time between the 2 follow-up MRIs (mo) 9.1 ± 5.2 18.3 ± 12.5 .022
No. of surgical resections at first follow-up MRI 2.00 ± 0.89 1.10 ± 0.32 .056
Sex (M/F) 5:1 7:3 >.99^{^b}
Histopathology (ratio of classic chordoma to all chordomas) 6/6 5/10 .093^{^b}
Mean ADC (×10⁻³ × mm²/s) 1.055 ± 0.298 (0.78–1.37) 1.622 ± 0.139 (1.34–1.65) <.001
Tumor volume (× 10³ × mm³) 21.2 ± 37.4 (0–60.4) 3.44 ± 2.38 (0–7.46) .492
Note:—NA indicates not applicable.
↵a Numbers in the table represent mean ± SD. The numbers in parentheses indicate the 95% CIs.
↵b P value was calculated by the Fisher exact test because the data were categoric.