Table 4.

Univariate and multivariate comparison of visual complications.

Univariate analysis						Multivariate analysis
Risk variables	Visual complication				P-value	ORd	95%CIe	P-value
	Yes		No
	n	%	n	%
Sex
Male	2	3.5	55	96.5	0.37	0.53	0.07–3.80	0.53
Female	3	8.1	34	91.9
Age
(Mean ± SD)	41.6 ± 4.6		41.7 ± 11.4		0.98	1.01	0.92–1.09	0.93
Technique
SRTb	1	1.6	62	98.4		1.00
3DCRTc	0	0	5	100	0.027f
Conventional	4	15.4	22	84.6		10.36	1.07–99.3	0.04
RTa dose (cGy)
4500–5040	0	0	13	100
5041–5400	2	4.9	39	95.1	0.57
>5400	3	7.5	37	92.5
Dose per fraction (cGy)
180	0	0	19	100
180–200	5	7.2	64	92.8	0.38
>200	0	0	6	100
No. of prior surgeries
0	0	0	6	100
1	4	5.6	67	94.4	0.91
2	1	6.7	14	93.3
3	0	0	2	100
Hypopituitarism prior to RTa
Present	4	7.3	51	92.7
Absent	1	2.6	37	97.4	0.33
Previous RTa
Yes	0	0	3	100	0.68
No	5	5.5	86	94.5

^aRadiotherapy (RT).

^bStereotactic radiotherapy (SRT).

^c3 dimensional conformal radiotherapy (3DCRT).

^dOdds ratio.

^eConfidence interval.

^fNot included in multivariate analysis as events were zero.