No Relationship Between the International Prostate Symptom Score and Post-Void Residual Volume in Primary Care

Figures & data

Figure 1 Study participants flow chart. *The study population of this study is part of a RCT.

Table 1 Characteristics of Study Population

		Total (N=126)
Age	Mean ±SD	64.8 ±7.2
IPSS total	Mean ±SD	16.5 ±6.8
IPSS total	Mild	15 (12.2%)
	Moderate	67 (54.5%)
	Severe	41 (33.3%)
IPSS-1 Incomplete emptying	Rarely	47 (37.3%)
	Sometimes	45 (35.7%)
	Often	34 (27.0%)
IPSS-2 Increased frequency	Rarely	31 (24.8%)
	Sometimes	58 (46.4%)
	Often	36 (28.8%)
IPSS-3 Intermittency	Rarely	49 (38.9%)
	Sometimes	41 (32.5%)
	Often	36 (28.6%)
IPSS-4 Urgency	Rarely	43 (34.4%)
	Sometimes	44 (35.2%)
	Often	38 (30.4%)
IPSS-5 Weak stream	Rarely	23 (18.5%)
	Sometimes	30 (24.2%)
	Often	71 (57.3%)
IPSS-6 Straining	Rarely	78 (62.4%)
	Sometimes	26 (20.8%)
	Often	21 (16.7%)
IPSS-7 Nocturia	Rarely	39 (31.0%)
	Sometimes	62 (49.2%)
	Often	25 (19.8%)
IPSS filling Q2+4+7	Mild	41 (32.8%)
	Moderate	61 (48.8%)
	Severe	23 (18.4%)
IPSS voiding Q1+3+5+6	Mild	39 (31.7%)
	Moderate	60 (47.6%)
	Severe	24 (19.0%)
Post-void residual volume	0–100 mL	92 (73.0%)
	100–200 mL	19 (15.1%)
	>200 mL	15 (11.9%)

Table 2 Relation IPSS with Post-Void Residual Volume, Cut-off Point 100 Ml

		Normal Residual (≤100 mL)	Abnormal Residual (>100 mL)	Odds Ratio (95%-CI)	p-value*
IPSS total	Mild (n=15)(ref)	13 (87%)	2 (13%)		0.41^a
	Moderate (n=67)	48 (72%)	19 (28%)	2.57 (0.53–12.50)	0.24
	Severe (n=41)	28 (68%)	13 (32%)	3.02 (0.59–15.37)	0.18
IPSS-1 Incomplete emptying	Rarely (n=47)(ref)	31 (66%)	16 (34%)		0.37^a
	Sometimes (n=45)	34 (76%)	11 (24%)	0.63 (0.25–1.56)	0.31
	Often (n=34)	27 (79%)	7 (21%)	0.50 (0.18–1.40)	0.19
IPSS-2 Increased frequency	Rarely (n=31)(ref)	23 (74%)	8 (26%)		0.61^a
	Sometimes (n=58)	44 (76%)	14 (24%)	0.92 (0.34–2.50)	0.86
	Often (n=36)	24 (67%)	12 (33%)	1.44 (0.50–4.16)	0.50
IPSS-3 Intermittency	Rarely (n=49)(ref)	38 (78%)	11 (22%)		0.61^a
	Sometimes (n=41)	28 (68%)	13 (32%)	1.60 (0.63–4.11)	0.32
	Often (n=36)	26 (72%)	10 (28%)	1.33 (0.49–3.58)	0.57
IPSS-4 Urgency	Rarely (n=43)(ref)	34 (79%)	9 (21%)		0.41^a
	Sometimes (n=44)	32 (73%)	12 (27%)	1.42 (0.53–3.81)	0.49
	Often (n=38)	25 (66%)	13 (34%)	1.96 (0.73–5.31)	0.18
IPSS-5 Weak stream	Rarely (23)(ref)	18 (78%)	5 (22%)		0.76^a
	Sometimes (n=30)	22 (73%)	8 (27%)	1.31 (0.36–4.71)	0.68
	Often (n=71)	50 (70%)	21 (30%)	1.51 (0.50–4.61)	0.47
IPSS-6 Straining	Rarely (n=78)(ref)	57 (73%)	21 (27%)		0.86^a
	Sometimes (n=26)	18 (69%)	8 (31%)	1.21 (0.46–3.19)	0.70
	Often (n=21)	16 (76%)	5 (24%)	0.89 (0.28–2.61)	0.77
IPSS-7 Nocturia	Rarely (n=39)(ref)	30 (77%)	9 (23%)		0.659^a
	Sometimes (n=62)	43 (69%)	19 (31%)	1.47 (0.59–3.70)	0.409
	Often (n=25)	19 (76%)	6 (24%)	1.05 (0.32–3.43)	0.93
IPSS filling (Q2+4+7)	Mild (n=41)(ref)	31 (76%)	10 (24%)		0.86^a
	Moderate (n=61)	44 (72%)	17 (28%)	1.20 (0.48–2.96)	0.70
	Severe (n=23)	16 (70%)	7 (30%)	1.36 (0.43–4.24)	0.60
IPSS voiding (Q1+3+5+6)	Mild (n=39)(ref)	28 (72%)	11 (28%)		0.95^a
	Moderate (n=60)	43 (72%)	17 (28%)	1.01 (0.41–2.46)	0.99
	Severe (n=24)	18 (75%)	6 (25%)	0.85 (0.27–2.70)	0.78

Notes: *Significance is set at the 0.05 level. ^aChi-squared test. Relation between predictive and post-void residual volume in total.

Table 3 Relation IPSS with Post-Void Residual Volume, Cut-off Point 200 Ml

		Normal Residual (≤200 mL)	Abnormal Residual (>200 mL)	Odds Ratio (95%-CI)	p-value*
IPSS total	Mild (n=15)(ref)	15 (100%)	0 (0%)	No patients >200 mL in reference group	0.30^a
	Moderate (n=67)	57 (85%)	10 (15%)
	Severe (n=41)	36 (88%)	5 (12%)
IPSS-1 Incomplete emptying	Rarely (n=47)(ref)	41 (87%)	6 (13%)		0.43^a
	Sometimes (n=45)	38 (84%)	7 (16%)	1.26 (0.39–4.08)	0.70
	Often (n=34)	32 (94%)	2 (6%)	0.43 (0.08–2.26)	0.31
IPSS-2 Increased frequency	Rarely (n=31)(ref)	28 (90%)	3 (10%)		0.87^a
	Sometimes (n=58)	51 (88%)	7 (12%)	1.28 (0.31–5.32)	0.73
	Often (n=36)	31 (86%)	5 (14%)	1.51 (0.33–6.88)	0.59
IPSS-3 Intermittency	Rarely (n=49)(ref)	44 (90%)	5 (10%)		0.87^a
	Sometimes (n=41)	36 (88%)	5 (12%)	1.22 (0.33–4.56)	0.76
	Often (n=36)	31 (86%)	5 (14%)	1.419 (0.38–5.32)	0.60
IPSS-4 Urgency	Rarely (n=43)(ref)	39 (91%)	4 (9%)		0.66^a
	Sometimes (n=44)	39 (89%)	5 (11%)	1.250 (0.31–5.01)	0.75
	Often (n=38)	32 (84%)	6 (16%)	1.83 (0.48–7.04)	0.38
IPSS-5 Weak stream	Rarely (23)(ref)	20 (87%)	3 (13%)		0.94^a
	Sometimes (n=30)	26 (87%)	4 (13%)	1.03 (0.21–5.11)	0.97
	Often (n=71)	63 (89%)	8 (11%)	0.85 (0.21–3.50)	0.81
IPSS-6 Straining	Rarely (n=78)(ref)	68 (87%)	10 (13%)		0.91^a
	Sometimes (n=26)	23 (88%)	3 (12%)	0.89 (0.22–3.51)	0.86
	Often (n=21)	19 (90%)	2 (10%)	0.72 (0.14–3.55)	0.68
IPSS-7 Nocturia	Rarely (n=39)(ref)	34 (87%)	5 (13%)		0.80^a
	Sometimes (n=62)	54 (87%)	8 (13%)	1.01 (0.30–3.33)	0.99
	Often (n=25)	23 (92%)	2 (8%)	0.59 (0.11–3.31)	0.55
IPSS filling (Q2+4+7)	Mild (n=41)(ref)	37 (90%)	4 (10%)		0.86^a
	Moderate (n=61)	53 (87%)	8 (13%)	1.40 (0.39–4.98)	0.60
	Severe (n=23)	20 (87%)	3 (13%)	1.39 (0.28–6.82)	0.68
IPSS voiding (Q1+3+5+6)	Mild (n=39)(ref)	34 (87%)	5 (13%)		0.43^a
	Moderate (n=60)	51 (85%)	9 (15%)	1.20 (0.37–3.89)	0.761
	Severe (n=24)	23 (96%)	1 (4%)	0.30 (0.03–2.70)	0.28

Notes: *Significance is set at the 0.05 level. ^aChi-squared test.