diff --git a/DESCRIPTION b/DESCRIPTION
index f3e7c1b..9a77f9e 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -9,7 +9,7 @@ Authors@R: c(
 	person("Chris", "Knoll", , "knoll@ohdsi.org", role = c("aut"))
 	)
 Maintainer: Jenna Reps <reps@ohdsi.org>
-Description: Various characterizations of target and outcome cohorts.
+Description: Various characterizations of target and outcome cohorts for data mapped to the OMOP CDM.
 License: Apache License 2.0
 URL: https://ohdsi.github.io/Characterization, https://github.com/OHDSI/Characterization
 BugReports: https://github.com/OHDSI/Characterization/issues
diff --git a/NEWS.md b/NEWS.md
index ebfe858..1663cfb 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,3 +1,7 @@
+Characterization 2.1.1
+======================
+- fixed result database column type for mean_exposure_time
+
 Characterization 2.1.0
 ======================
 - risk factors and case series now restrict to first outcome only.
diff --git a/inst/sql/postgresql/migrations/Migration_2-v2_1_1_mean_exposure_time_type.sql b/inst/sql/postgresql/migrations/Migration_2-v2_1_1_mean_exposure_time_type.sql
new file mode 100644
index 0000000..dc75050
--- /dev/null
+++ b/inst/sql/postgresql/migrations/Migration_2-v2_1_1_mean_exposure_time_type.sql
@@ -0,0 +1,8 @@
+-- Database migrations for verion 2.1.1
+
+{DEFAULT @package_version = package_version}
+{DEFAULT @migration = migration}
+{DEFAULT @table_prefix = ''}
+
+-- Change the column type of mean_exposure_time
+ALTER TABLE @database_schema.@table_prefixcohort_counts ALTER COLUMN mean_exposure_time TYPE float;
diff --git a/inst/sql/sql_server/migrations/Migration_2-v2_1_1_mean_exposure_time_type.sql b/inst/sql/sql_server/migrations/Migration_2-v2_1_1_mean_exposure_time_type.sql
new file mode 100644
index 0000000..ef9f3f0
--- /dev/null
+++ b/inst/sql/sql_server/migrations/Migration_2-v2_1_1_mean_exposure_time_type.sql
@@ -0,0 +1,9 @@
+-- Database migrations for verion 2.1.1
+
+{DEFAULT @package_version = package_version}
+{DEFAULT @migration = migration}
+{DEFAULT @table_prefix = ''}
+
+-- Change the column type of mean_exposure_time
+ALTER TABLE @database_schema.@table_prefixcohort_counts ALTER COLUMN mean_exposure_time float;
+
diff --git a/inst/sql/sqlite/migrations/Migration_2-v2_1_1_mean_exposure_time_type.sql b/inst/sql/sqlite/migrations/Migration_2-v2_1_1_mean_exposure_time_type.sql
new file mode 100644
index 0000000..1cbab76
--- /dev/null
+++ b/inst/sql/sqlite/migrations/Migration_2-v2_1_1_mean_exposure_time_type.sql
@@ -0,0 +1,39 @@
+-- Database migrations for verion 2.1.1
+
+{DEFAULT @package_version = package_version}
+{DEFAULT @migration = migration}
+{DEFAULT @table_prefix = ''}
+
+-- Change the column type of mean_exposure_time
+ALTER TABLE @database_schema.@table_prefixcohort_counts RENAME TO _cohort_counts_old;
+
+CREATE TABLE @database_schema.@table_prefixcohort_counts (
+    database_id varchar(100) NOT NULL,
+    cohort_type varchar(10),
+    target_cohort_id int,
+    outcome_cohort_id int,
+    risk_window_start int,
+    risk_window_end int,
+    start_anchor varchar(15),
+    end_anchor varchar(15),
+    min_prior_observation int,
+    outcome_washout_days int,
+    row_count int NOT NULL,
+    person_count int NOT NULL,
+    min_exposure_time int,
+    mean_exposure_time float,
+    max_exposure_time int
+);
+
+INSERT INTO @database_schema.@table_prefixcohort_counts
+            (database_id, cohort_type, target_cohort_id, outcome_cohort_id,
+             risk_window_start, risk_window_end, start_anchor, end_anchor,
+             min_prior_observation, outcome_washout_days,row_count, person_count,
+             min_exposure_time, mean_exposure_time, max_exposure_time)
+SELECT database_id, cohort_type, target_cohort_id, outcome_cohort_id,
+       risk_window_start, risk_window_end, start_anchor, end_anchor,
+       min_prior_observation, outcome_washout_days,row_count, person_count,
+       min_exposure_time, mean_exposure_time, max_exposure_time
+FROM _cohort_counts_old;
+
+DROP TABLE _cohort_counts_old;
diff --git a/man/Characterization-package.Rd b/man/Characterization-package.Rd
index 7c65079..298e879 100644
--- a/man/Characterization-package.Rd
+++ b/man/Characterization-package.Rd
@@ -6,7 +6,7 @@
 \alias{Characterization-package}
 \title{Characterization: Characterizations of Cohorts}
 \description{
-Various characterizations of target and outcome cohorts.
+Various characterizations of target and outcome cohorts for data mapped to the OMOP CDM.
 }
 \seealso{
 Useful links: