NCT00553410 · BASELINE

Baseline characteristics

Letrozole in Preventing Cancer in Postmenopausal Women Who Have Received 4-6 Years of Hormone Therapy for Hormone Receptor-Positive, Lymph Node-Positive, Early-Stage Breast Cancer · Source last updated 2026-09-01

Results reported by the registry submitting party. Population, time horizon, units and missing values must be read together.

denoms

counts
group Id
BG000
value
2426
group Id
BG001
value
2425
group Id
BG002
value
4851
units
Participants

groups

description
Continuous letrozole: 5 years continuously (2.5 mg Letrozole daily) Letrozole: Film-coated tablet, oral use, 2.5 mg Letrozole daily for 5 years continuously
id
BG000
title
Arm A: Continuous Letrozole
description
Intermittent letrozole: 48 months over 5 yrs: 4 x 9 months (9 mo followed by 3 mo treatment-free interval in yrs 1-4, -\> 36 mo) plus 1 x 12 mo in yr 5 -\> 48 months Letrozole: Film-coated tablet, oral use, 2.5 mg daily, 48 months over 5 yrs: 4 x 9 months (9 mo followed by 3 mo treatment-free interval in yrs 1-4, -\> 36 mo) plus 1 x 12 mo in yr 5 -\> 48 months
id
BG001
title
Arm B: Intermittent Letrozole
description
Total of all reporting groups
id
BG002
title
Total

measures

classes
categories
measurements
group Id
BG000
value
668
group Id
BG001
value
671
group Id
BG002
value
1339
title
<55
categories
measurements
group Id
BG000
value
504
group Id
BG001
value
496
group Id
BG002
value
1000
title
55-59
categories
measurements
group Id
BG000
value
451
group Id
BG001
value
471
group Id
BG002
value
922
title
60-64
categories
measurements
group Id
BG000
value
400
group Id
BG001
value
375
group Id
BG002
value
775
title
65-69
categories
measurements
group Id
BG000
value
383
group Id
BG001
value
412
group Id
BG002
value
795
title
70+
param Type
COUNT_OF_PARTICIPANTS
title
Age, Customized
unit Of Measure
Participants
classes
categories
measurements
group Id
BG000
value
2426
group Id
BG001
value
2425
group Id
BG002
value
4851
title
Female
measurements
group Id
BG000
value
0
group Id
BG001
value
0
group Id
BG002
value
0
title
Male
param Type
COUNT_OF_PARTICIPANTS
title
Sex: Female, Male
unit Of Measure
Participants
classes
categories
measurements
group Id
BG000
value
2199
group Id
BG001
value
2211
group Id
BG002
value
4410
title
White/Caucasian
categories
measurements
group Id
BG000
value
10
group Id
BG001
value
9
group Id
BG002
value
19
title
Black
categories
measurements
group Id
BG000
value
119
group Id
BG001
value
121
group Id
BG002
value
240
title
Asian
categories
measurements
group Id
BG000
value
97
group Id
BG001
value
83
group Id
BG002
value
180
title
Other
categories
measurements
group Id
BG000
value
1
group Id
BG001
value
1
group Id
BG002
value
2
title
Unknown
param Type
COUNT_OF_PARTICIPANTS
title
Race/Ethnicity, Customized
unit Of Measure
Participants
classes
categories
measurements
group Id
BG000
value
78
group Id
BG001
value
77
group Id
BG002
value
155
title
Hungary
categories
measurements
group Id
BG000
value
21
group Id
BG001
value
19
group Id
BG002
value
40
title
United States
categories
measurements
group Id
BG000
value
93
group Id
BG001
value
99
group Id
BG002
value
192
title
Japan
categories
measurements
group Id
BG000
value
217
group Id
BG001
value
216
group Id
BG002
value
433
title
United Kingdom
categories
measurements
group Id
BG000
value
159
group Id
BG001
value
159
group Id
BG002
value
318
title
Switzerland
categories
measurements
group Id
BG000
value
8
group Id
BG001
value
8
group Id
BG002
value
16
title
India
categories
measurements
group Id
BG000
value
22
group Id
BG001
value
21
group Id
BG002
value
43
title
Russia
categories
measurements
group Id
BG000
value
137
group Id
BG001
value
134
group Id
BG002
value
271
title
Spain
categories
measurements
group Id
BG000
value
10
group Id
BG001
value
9
group Id
BG002
value
19
title
New Zealand
categories
measurements
group Id
BG000
value
88
group Id
BG001
value
92
group Id
BG002
value
180
title
Austria
categories
measurements
group Id
BG000
value
104
group Id
BG001
value
105
group Id
BG002
value
209
title
Sweden
categories
measurements
group Id
BG000
value
509
group Id
BG001
value
520
group Id
BG002
value
1029
title
Belgium
param Type
NUMBER
title
Region of Enrollment
unit Of Measure
participants

population Description

Randomized patients, regardless of eligibility status; exceptions were patients who immediately withdrew consent prior to treatment initiation and declined all participation, patients determined to be without adequate documentation of informed consent, and/or patients at a participating center determined not to be compliant with protocol procedures

Complete source fields

denoms

counts
group Id
BG000
value
2426
group Id
BG001
value
2425
group Id
BG002
value
4851
units
Participants

groups

description
Continuous letrozole: 5 years continuously (2.5 mg Letrozole daily) Letrozole: Film-coated tablet, oral use, 2.5 mg Letrozole daily for 5 years continuously
id
BG000
title
Arm A: Continuous Letrozole
description
Intermittent letrozole: 48 months over 5 yrs: 4 x 9 months (9 mo followed by 3 mo treatment-free interval in yrs 1-4, -\> 36 mo) plus 1 x 12 mo in yr 5 -\> 48 months Letrozole: Film-coated tablet, oral use, 2.5 mg daily, 48 months over 5 yrs: 4 x 9 months (9 mo followed by 3 mo treatment-free interval in yrs 1-4, -\> 36 mo) plus 1 x 12 mo in yr 5 -\> 48 months
id
BG001
title
Arm B: Intermittent Letrozole
description
Total of all reporting groups
id
BG002
title
Total

measures

classes
categories
measurements
group Id
BG000
value
668
group Id
BG001
value
671
group Id
BG002
value
1339
title
<55
categories
measurements
group Id
BG000
value
504
group Id
BG001
value
496
group Id
BG002
value
1000
title
55-59
categories
measurements
group Id
BG000
value
451
group Id
BG001
value
471
group Id
BG002
value
922
title
60-64
categories
measurements
group Id
BG000
value
400
group Id
BG001
value
375
group Id
BG002
value
775
title
65-69
categories
measurements
group Id
BG000
value
383
group Id
BG001
value
412
group Id
BG002
value
795
title
70+
param Type
COUNT_OF_PARTICIPANTS
title
Age, Customized
unit Of Measure
Participants
classes
categories
measurements
group Id
BG000
value
2426
group Id
BG001
value
2425
group Id
BG002
value
4851
title
Female
measurements
group Id
BG000
value
0
group Id
BG001
value
0
group Id
BG002
value
0
title
Male
param Type
COUNT_OF_PARTICIPANTS
title
Sex: Female, Male
unit Of Measure
Participants
classes
categories
measurements
group Id
BG000
value
2199
group Id
BG001
value
2211
group Id
BG002
value
4410
title
White/Caucasian
categories
measurements
group Id
BG000
value
10
group Id
BG001
value
9
group Id
BG002
value
19
title
Black
categories
measurements
group Id
BG000
value
119
group Id
BG001
value
121
group Id
BG002
value
240
title
Asian
categories
measurements
group Id
BG000
value
97
group Id
BG001
value
83
group Id
BG002
value
180
title
Other
categories
measurements
group Id
BG000
value
1
group Id
BG001
value
1
group Id
BG002
value
2
title
Unknown
param Type
COUNT_OF_PARTICIPANTS
title
Race/Ethnicity, Customized
unit Of Measure
Participants
classes
categories
measurements
group Id
BG000
value
78
group Id
BG001
value
77
group Id
BG002
value
155
title
Hungary
categories
measurements
group Id
BG000
value
21
group Id
BG001
value
19
group Id
BG002
value
40
title
United States
categories
measurements
group Id
BG000
value
93
group Id
BG001
value
99
group Id
BG002
value
192
title
Japan
categories
measurements
group Id
BG000
value
217
group Id
BG001
value
216
group Id
BG002
value
433
title
United Kingdom
categories
measurements
group Id
BG000
value
159
group Id
BG001
value
159
group Id
BG002
value
318
title
Switzerland
categories
measurements
group Id
BG000
value
8
group Id
BG001
value
8
group Id
BG002
value
16
title
India
categories
measurements
group Id
BG000
value
22
group Id
BG001
value
21
group Id
BG002
value
43
title
Russia
categories
measurements
group Id
BG000
value
137
group Id
BG001
value
134
group Id
BG002
value
271
title
Spain
categories
measurements
group Id
BG000
value
10
group Id
BG001
value
9
group Id
BG002
value
19
title
New Zealand
categories
measurements
group Id
BG000
value
88
group Id
BG001
value
92
group Id
BG002
value
180
title
Austria
categories
measurements
group Id
BG000
value
104
group Id
BG001
value
105
group Id
BG002
value
209
title
Sweden
categories
measurements
group Id
BG000
value
509
group Id
BG001
value
520
group Id
BG002
value
1029
title
Belgium
param Type
NUMBER
title
Region of Enrollment
unit Of Measure
participants

population Description

Download exact source JSON → · Snapshot ctgov-results-191f4516d4760045304b24a0

Preserved source evidence · Not medical advice