Distribution of Patient Characteristics: History
| Characteristic | No. (% of Total) | Culture Sample, No. | Positive Culture % | |
|---|---|---|---|---|
| Positive | Negative | |||
| Total | 196 (100) | 120 | 76 | 61 |
| Ethnicity | ||||
| Dutch/German | 171 (87) | 107 | 64 | 63 |
| Surinam/Antillian/Aruban | 15 (8) | 6 | 9 | 40 |
| Other | 10 (5) | 7 | 3 | 70 |
| General health | ||||
| Very good | 22 (11) | 12 | 10 | 55 |
| Good | 110 (56) | 74 | 36 | 67 |
| Reasonable | 44 (22) | 25 | 19 | 57 |
| Moderate | 11 (6) | 7 | 4 | 64 |
| Bad | 9 (5) | 2 | 7 | 22 |
| Marital status | ||||
| Married | 81 (41) | 51 | 30 | 63 |
| Partner, cohabitating | 31 (16) | 20 | 11 | 65 |
| Partner, living apart | 36 (18) | 24 | 12 | 67 |
| Single | 48 (24) | 25 | 23 | 52 |
| ≥ First-grade relative with recurrent UTIs? | ||||
| No | 137 (70) | 83 | 54 | 61 |
| Yes | 59 (30) | 37 | 22 | 63 |
| Last menstruation >1 year ago? | ||||
| No | 133 (68) | 81 | 52 | 61 |
| Yes | 63 (32) | 39 | 24 | 62 |
| Diabetes mellitus according to patient? | ||||
| No | 172 (88) | 111 | 61 | 65 |
| Yes | 24 (12) | 9 | 15 | 38 |
| Times of sexual activity in past week | ||||
| 0 | 67 (34) | 34 | 33 | 51 |
| 1 | 39 (20) | 23 | 16 | 59 |
| 2 | 40 (21) | 33 | 7 | 83 |
| 3 | 22 (11) | 14 | 8 | 64 |
| 4 | 14 (7) | 9 | 5 | 64 |
| ≥5 | 14 (7) | 7 | 7 | 50 |
| UTIs in past year according to patient | ||||
| 0 | 92 (47) | 57 | 35 | 62 |
| 1 | 28 (14) | 24 | 4 | 86 |
| 2 | 30 (15) | 19 | 11 | 63 |
| ≥3 | 32 (16) | 15 | 17 | 47 |
| Don’t know | 14 (7) | 5 | 9 | 36 |
| ≥1 UTI ever diagnosed according to patient? | ||||
| No | 42 (21) | 24 | 18 | 57 |
| Yes | 154 (79) | 100 | 54 | 65 |
| Patient thinks she has a UTI? | ||||
| No | 9 (5) | 4 | 5 | 44 |
| Yes | 164 (84) | 114 | 50 | 70 |
| Don’t know | 23 (12) | 2 | 21 | 9 |
| Symptoms | ||||
| Duration of symptoms, d | ||||
| 0 | 18 (9) | 12 | 6 | 67 |
| 1 | 40 (20) | 28 | 12 | 70 |
| 2 | 37 (19) | 23 | 14 | 62 |
| 3 | 37 (19) | 22 | 15 | 59 |
| 4 | 24 (12) | 14 | 10 | 58 |
| ≥5 | 40 (20) | 21 | 19 | 53 |
| False urge to urinate | ||||
| No | 54 (28) | 30 | 24 | 57 |
| A little | 82 (42) | 53 | 29 | 65 |
| Quite much | 43 (22) | 27 | 16 | 63 |
| Very much | 17 (9) | 10 | 7 | 59 |
| More frequent micturition than usual | ||||
| No | 12 (6) | 3 | 9 | 25 |
| A little | 62 (32) | 31 | 31 | 50 |
| Quite much | 81 (42) | 59 | 22 | 73 |
| Very much | 41 (21) | 27 | 14 | 66 |
| Pain during micturition | ||||
| No | 35 (18) | 14 | 22 | 39 |
| A little | 73 (37) | 39 | 34 | 53 |
| Quite much | 64 (33) | 53 | 11 | 83 |
| Very much | 23 (12) | 14 | 9 | 61 |
| Urge to urinate hard to control | ||||
| No | 49 (25) | 22 | 27 | 45 |
| A little | 88 (45) | 57 | 31 | 65 |
| Quite much | 33 (17) | 24 | 9 | 73 |
| Very much | 26 (13) | 17 | 9 | 65 |
| Vaginal discharge | ||||
| No | 133 (68) | 86 | 47 | 65 |
| A little | 49 (25) | 27 | 22 | 55 |
| Quite much | 14 (7) | 7 | 7 | 50 |
| Very much | 0 (0) | 0 | 0 | n/a |
| Vaginal irritation or itching | ||||
| No | 110 (56) | 72 | 38 | 65 |
| A little | 57 (29) | 28 | 29 | 49 |
| Quite much | 19 (10) | 15 | 4 | 79 |
| Very much | 10 (5) | 5 | 5 | 50 |
| Bother at work/school | ||||
| No | 24 (13) | 9 | 15 | 38 |
| Hardly | 37 (19) | 21 | 16 | 57 |
| Moderate | 69 (35) | 48 | 21 | 70 |
| Much | 46 (23) | 29 | 17 | 63 |
| Very much | 20 (10) | 13 | 7 | 65 |
| Bother at social activities | ||||
| No | 47 (24) | 24 | 23 | 51 |
| Hardly | 49 (25) | 29 | 20 | 59 |
| Moderate | 53 (27) | 36 | 17 | 68 |
| Much | 33 (17) | 21 | 12 | 64 |
| Very much | 14 (7) | 10 | 4 | 71 |
n/a=not applicable; UTI=urinary tract infection.
a Percentages represent the fraction of positive cultures for the corresponding characteristic, eg, 70% of patients with symptoms for 1 day had a positive culture (implying that the positive predictive value of having symptoms for 1 day is 70%).