Table 2.

Risk factors for reoperation

	No revision	Revision	P value
Number of patients	93	9
Average age [years] (range)	62.0 (18–95)	73.3 (58–82)	0.003
Gender
Male	48	5	0.821
Female	45	4
Fracture classification
Gardens 1–2	66	7	0.665
Gardens 3–4	27	2
Senior surgeon (%)	86	4	< 0.001
Admission to surgery
< 24 h	44	5	0.641
24–48 h	41	4
> 48 h	8	0
Average hospitalising duration [days] (range)	5.8 (1–28)	4.9 (2–8)	0.567
Surgical duration [min] (mean, range)	43.9 (21–95)	51.1 (22–90)	0.402
Follow-up duration [months] (mean, range)	7.0 (5–28)	6.4 (1–14)	0.829
Estimated blood loss [ml] (mean, range)	53.5 (0–200)	35.6 (0–100)	0.288
BMI (mean, range)	25.7 (17.5–34.6)	24.4 (19.6–29.7)	0.381
Reported comorbidities [number of patients]
Diabetes	24	2	0.118
Cardiovascular	30	8
Neurological	8	0
Chronic lung disease	4	0
Active malignancy	14	0
Radiographic measurements
TAD	20.9 +  − 5.7	19.7 +  − 6.4	0.529
Parker ratio Ap*	43.5 +  − 7.7	46.5 +  − 7.8	0.277
Parker ratio Lat*	47.4 +  − 6.7	54.7 +  − 6.3	0.003

^*Median ratio of screw from centre