Urological and nursing-related predictors of unplanned hospital readmission after percutaneous nephrolithotomy: A prospective cohort study

Table 1 Sociodemographic characteristics presented for total, readmitted, and non-readmitted patients (n = 161), n (%)/mean ± SD¹

Sociodemographic variables	Total (n = 161)	Readmitted (n = 36)	Non-readmitted (n = 125)	P value
Sex
Male	97 (60.2)	25 (69.4)	72 (57.6)	0.138
Female	64 (39.8)	11 (30.6)	53 (42.4)
BMI
Underweight (< 18)	1 (0.6)	0 (0)	1 (0.8)	0.617
Normal weight (18-25)	101 (62.7)	24 (66.6)	77 (61.6)
Overweight (25-30)	47 (29.2)	11 (30.6)	36 (28.8)
Obese (> 30)	12 (7.5)	1 (2.8)	11 (8.8)
BMI	24.4 ± 2.8	24.1 ± 2.4	24.5 ± 2.9	0.430
Age group
From 20-39 years	63 (39.1)	17 (47.2)	46 (36.8)	0.091
From 40-59 years	78 (48.4)	12 (33.3)	66 (52.8)
From 60-65 years	20 (12.4)	7 (19.4)	13 (10.4)
Mean age (years)	44 ± 12.6	44.4 ± 12.7	43.9 ± 12.6	0.847
Marital status
Single	16 (9.9)	1 (2.8)	15 (12)	0.133
Married	141 (87.6)	35 (97.2)	106 (84.8)
Widow/widower	4 (2.5)	0 (0)	4 (3.2)
Occupation
Office work	37 (23)	7 (19.4)	30 (24)	0.372
Not working	124 (77)	29 (80.6)	95 (76)
Educational level
High	44 (27.3)	9 (25)	35 (28)	0.565
Secondary	33 (20.5)	9 (25)	24 (19.2)
Basic	30 (18.6)	5 (13.9)	25 (20)
Read and write	16 (10)	2 (5.5)	14 (11.2)
Illiterate	38 (23.6)	11 (30.6)	27 (21.6)
Residence
Urban	42 (26.1)	12 (33.3)	30 (24)	0.261
Rural	119 (73.9)	24 (66.7)	95 (76)
Special habits
Smoking	46 (28.6)	12 (33.3)	34 (27.2)	0.521
Use of excessive caffeine-containing beverages (café and tea)	66 (41)	16 (44.4)	50 (40)

¹χ² test used for qualitative data between the two groups and independent t-test used for quantitative data between the two groups.

BMI: Body mass index.