Effect on Primary Dysmenorrhea

Dysmenorrheic pain was defined as pelvic pain during the menstrual/withdrawal bleeding episode and the 2 days before this episode. Baseline period: 2 days before the first menstrual bleeding until 3rd day before the 3rd menstrual bleeding (normalized to a standard 56-day period). Treatment period: 2 days before the withdrawal bleeding (WB) of the 1st evaluable treatment cycle until 3rd day before the WB of the cycle after the 2nd evaluable treatment cycle (normalized to a standard 56-day period).

Dysmenorrheic pain: pelvic pain during menstrual/withdrawal bleeding (WB) episode and 2 days before. Scores per day: 0 No pain; 1 Mild pain with no need for painkiller; 2 Moderate pain with need for painkiller; 3 Severe pain with need for painkiller. Baseline period: 2 days before 1st menstrual bleeding until 3rd day before 3rd menstrual bleeding (normalized to standard 56-day period). Treatment period: 2 days before WB of 1st treatment cycle until 3rd day before WB of the cycle after 2nd treatment cycle (normalized to standard 56-day period). Score difference min -168 (best), max 168 (worst)

Baseline period: 2 days before the first menstrual bleeding until 3rd day before the 3rd menstrual bleeding (normalized to a standard 56-day period). Treatment period: 2 days before the withdrawal bleeding (WB) of the 1st evaluable treatment cycle until 3rd day before the WB of the cycle after the 2nd evaluable treatment cycle (normalized to a standard 56-day period).

Evaluated was the number of days with bleeding-associated pelvic pain, excluding days during withdrawal bleeding (WB) and the 2 days preceding such WB, and during administration deviation bleeding and the 2 days preceding such bleeding (normalized to a standard 56-day period). Baseline period: 2 days before first menstrual bleeding until 3rd day before 3rd menstrual bleeding (normalized to standard 56-day period). Treatment period: 2 days before WB of the 1st treatment cycle until 3rd day before the WB of the cycle after the 2nd treatment cycle (normalized to standard 56-day period).

Rescue medication use was standardized intake of 200 mg Ibuprofen tablets. Baseline period: 2 days before the first menstrual bleeding until 3rd day before the 3rd menstrual bleeding (normalized to a standard 56-day period). Treatment period: 2 days before the withdrawal bleeding (WB) of the 1st evaluable treatment cycle until 3rd day before the WB of the cycle after the 2nd evaluable treatment cycle (normalized to a standard 56-day period).

Rescue medication use was standardized intake of 200 mg Ibuprofen tablets. Baseline period: 2 days before the first menstrual bleeding until 3rd day before the 3rd menstrual bleeding (normalized to a standard 56-day period). Treatment period: 2 days before the withdrawal bleeding (WB) of the 1st evaluable treatment cycle until 3rd day before the WB of the cycle after the 2nd evaluable treatment cycle (normalized to a standard 56-day period).

Interference of dysmenorrheic pain with work/school and social or other activity was assessed (yes/no). Baseline period: 2 days before the first menstrual bleeding until 3rd day before the 3rd menstrual bleeding (normalized to a standard 56-day period). Treatment period: 2 days before the withdrawal bleeding (WB) of the 1st evaluable treatment cycle until 3rd day before the WB of the cycle after the 2nd evaluable treatment cycle (normalized to a standard 56-day period).

Interference of dysmenorrheic pain with work/school and social or other activity was assessed (yes/no). Baseline period: 2 days before the first menstrual bleeding until 3rd day before the 3rd menstrual bleeding (normalized to a standard 56-day period). Treatment period: 2 days before the withdrawal bleeding (WB) of the 1st evaluable treatment cycle until 3rd day before the WB of the cycle after the 2nd evaluable treatment cycle (normalized to a standard 56-day period).

Participants were asked to express the degree of their satisfaction with study treatment.

Bleeding/spotting episodes (day[s] with bleeding/spotting preceded and followed by at least 2 bleeding/spotting-free days) were described using the reference period (RP) method (length of RP: 90 days) recommended by the World Health Organization. 1st RP started on the 1st day of study medication. The total number of days during bleeding or spotting episodes was counted. Spotting = less than associated with normal menstruation relative to the subject's experience with no need for sanitary protection (except for panty liners). Bleeding = any bleeding of greater intensity than spotting.

Bleeding/spotting episodes (day[s] with bleeding/spotting preceded and followed by at least 2 bleeding/spotting-free days) were described using the reference period (RP) method (length of RP: 90 days) recommended by the World Health Organization. 1st RP started on the 1st day of study medication. The total number of days during bleeding or spotting episodes was counted. Spotting = less than associated with normal menstruation relative to the subject's experience with no need for sanitary protection (except for panty liners). Bleeding = any bleeding of greater intensity than spotting.

Bleeding/spotting episodes (day[s] with bleeding/spotting preceded and followed by at least 2 bleeding/spotting-free days) were described using the reference period (RP) method (length of RP: 90 days) recommended by the World Health Organization. 1st RP started on the 1st day of study medication. The total number of days during bleeding or spotting episodes was counted. Spotting = less than associated with normal menstruation relative to the subject's experience with no need for sanitary protection (except for panty liners). Bleeding = any bleeding of greater intensity than spotting.

Bleeding/spotting episodes (day[s] with bleeding/spotting preceded and followed by at least 2 bleeding/spotting-free days) were described using the reference period (RP) method (length of RP: 90 days) recommended by the World Health Organization. 1st RP started on the 1st day of study medication. The total number of days during bleeding or spotting episodes was counted. Spotting = less than associated with normal menstruation relative to the subject's experience with no need for sanitary protection (except for panty liners). Bleeding = any bleeding of greater intensity than spotting.

Bleeding/spotting episodes (day[s] with bleeding/spotting preceded and followed by at least 2 bleeding/spotting-free days) were described using the reference period (RP) method (length of RP: 90 days) recommended by the World Health Organization. 1st RP started on the 1st day of study medication. The total number of days during bleeding or spotting episodes was counted. Spotting = less than associated with normal menstruation relative to the subject's experience with no need for sanitary protection (except for panty liners). Bleeding = any bleeding of greater intensity than spotting.

Bleeding/spotting episodes (day[s] with bleeding/spotting preceded and followed by at least 2 bleeding/spotting-free days) were described using the reference period (RP) method (length of RP: 90 days) recommended by the World Health Organization. 1st RP started on the 1st day of study medication. The total number of days during bleeding or spotting episodes was counted. Spotting = less than associated with normal menstruation relative to the subject's experience with no need for sanitary protection (except for panty liners). Bleeding = any bleeding of greater intensity than spotting.

Bleeding/spotting episodes (day[s] with bleeding/spotting preceded and followed by at least 2 bleeding/spotting-free days) were described using the reference period (RP) method (length of RP: 90 days) recommended by the World Health Organization. 1st RP started on the 1st day of study medication. The total number of days during bleeding or spotting episodes was counted. Spotting = less than associated with normal menstruation relative to the subject's experience with no need for sanitary protection (except for panty liners). Bleeding = any bleeding of greater intensity than spotting.

Bleeding/spotting episodes (day[s] with bleeding/spotting preceded and followed by at least 2 bleeding/spotting-free days) were described using the reference period (RP) method (length of RP: 90 days) recommended by the World Health Organization. 1st RP started on the 1st day of study medication. The total number of days during bleeding or spotting episodes was counted. Spotting = less than associated with normal menstruation relative to the subject's experience with no need for sanitary protection (except for panty liners). Bleeding = any bleeding of greater intensity than spotting.

Bleeding/spotting episodes (day[s] with bleeding/spotting preceded and followed by at least 2 bleeding/spotting-free days) were described using the reference period (RP) method (length of RP: 90 days) recommended by the World Health Organization. 1st RP started on the 1st day of study medication. The total number of days during bleeding or spotting episodes was counted. Spotting = less than associated with normal menstruation relative to the subject's experience with no need for sanitary protection (except for panty liners). Bleeding = any bleeding of greater intensity than spotting.

Bleeding/spotting episodes (day[s] with bleeding/spotting preceded and followed by at least 2 bleeding/spotting-free days) were described using the reference period (RP) method (length of RP: 90 days) recommended by the World Health Organization. 1st RP started on the 1st day of study medication. The total number of days during bleeding or spotting episodes was counted. Spotting = less than associated with normal menstruation relative to the subject's experience with no need for sanitary protection (except for panty liners). Bleeding = any bleeding of greater intensity than spotting.

Withdrawal bleeding was defined as the first bleeding episode after complete or partial progestogen withdrawal (i.e. the first episode starting after the last day of progestogen intake). If a bleeding episode was ongoing on the last day of progestogen intake and the following day, this episode was regarded as the withdrawal bleeding episode, as long as it had started not more than 4 days before the progestogen withdrawal.

Withdrawal bleeding was defined as the first bleeding episode after complete or partial progestogen withdrawal (i.e. the first episode starting after the last day of progestogen intake). If a bleeding episode was ongoing on the last day of progestogen intake and the following day, this episode was regarded as the withdrawal bleeding episode, as long as it had started not more than 4 days before the progestogen withdrawal.

Withdrawal bleeding was defined as the first bleeding episode after complete or partial progestogen withdrawal (i.e. the first episode starting after the last day of progestogen intake). If a bleeding episode was ongoing on the last day of progestogen intake and the following day, this episode was regarded as the withdrawal bleeding episode, as long as it had started not more than 4 days before the progestogen withdrawal.

Withdrawal bleeding was defined as the first bleeding episode after complete or partial progestogen withdrawal (i.e. the first episode starting after the last day of progestogen intake). If a bleeding episode was ongoing on the last day of progestogen intake and the following day, this episode was regarded as the withdrawal bleeding episode, as long as it had started not more than 4 days before the progestogen withdrawal.

Withdrawal bleeding was defined as the first bleeding episode after complete or partial progestogen withdrawal (i.e. the first episode starting after the last day of progestogen intake). If a bleeding episode was ongoing on the last day of progestogen intake and the following day, this episode was regarded as the withdrawal bleeding episode, as long as it had started not more than 4 days before the progestogen withdrawal. Intensity was defined as: 1 = none, 2 = spotting, 3 = light, 4 = normal, 5 = heavy.

Withdrawal bleeding was defined as the first bleeding episode after complete or partial progestogen withdrawal (i.e. the first episode starting after the last day of progestogen intake). If a bleeding episode was ongoing on the last day of progestogen intake and the following day, this episode was regarded as the withdrawal bleeding episode, as long as it had started not more than 4 days before the progestogen withdrawal. Intensity was defined as: 1 = none, 2 = spotting, 3 = light, 4 = normal, 5 = heavy.

Withdrawal bleeding was defined as the first bleeding episode after complete or partial progestogen withdrawal (i.e. the first episode starting after the last day of progestogen intake). If a bleeding episode was ongoing on the last day of progestogen intake and the following day, this episode was regarded as the withdrawal bleeding episode, as long as it had started not more than 4 days before the progestogen withdrawal.

Withdrawal bleeding was defined as the first bleeding episode after complete or partial progestogen withdrawal (i.e. the first episode starting after the last day of progestogen intake). If a bleeding episode was ongoing on the last day of progestogen intake and the following day, this episode was regarded as the withdrawal bleeding episode, as long as it had started not more than 4 days before the progestogen withdrawal.

Intracyclic bleeding episodes were any bleeding episodes not qualifying as withdrawal bleeding. The latter was defined as the first bleeding episode after complete or partial progestogen withdrawal (i.e. the first episode starting after the last day of progestogen intake). If a bleeding episode was ongoing on the last day of progestogen intake and the following day, this episode was regarded as the withdrawal bleeding episode, as long as it had started not more than 4 days before the progestogen withdrawal.

Intracyclic bleeding episodes were any bleeding episodes not qualifying as withdrawal bleeding. The latter was defined as the first bleeding episode after complete or partial progestogen withdrawal (i.e. the first episode starting after the last day of progestogen intake). If a bleeding episode was ongoing on the last day of progestogen intake and the following day, this episode was regarded as the withdrawal bleeding episode, as long as it had started not more than 4 days before the progestogen withdrawal.

Intracyclic bleeding episodes were any bleeding episodes not qualifying as withdrawal bleeding. The latter was defined as the first bleeding episode after complete or partial progestogen withdrawal (i.e. the first episode starting after the last day of progestogen intake). If a bleeding episode was ongoing on the last day of progestogen intake and the following day, this episode was regarded as the withdrawal bleeding episode, as long as it had started not more than 4 days before the progestogen withdrawal.

Intracyclic bleeding episodes were any bleeding episodes not qualifying as withdrawal bleeding. The latter was defined as the first bleeding episode after complete or partial progestogen withdrawal (i.e. the first episode starting after the last day of progestogen intake). If a bleeding episode was ongoing on the last day of progestogen intake and the following day, this episode was regarded as the withdrawal bleeding episode, as long as it had started not more than 4 days before the progestogen withdrawal.

Intracyclic bleeding episodes were any bleeding episodes not qualifying as withdrawal bleeding. The latter was defined as the first bleeding episode after complete or partial progestogen withdrawal (i.e. the first episode starting after the last day of progestogen intake). If a bleeding episode was ongoing on the last day of progestogen intake and the following day, this episode was regarded as the withdrawal bleeding episode, as long as it had started not more than 4 days before the progestogen withdrawal.

Intracyclic bleeding episodes were any bleeding episodes not qualifying as withdrawal bleeding. The latter was defined as the first bleeding episode after complete or partial progestogen withdrawal (i.e. the first episode starting after the last day of progestogen intake). If a bleeding episode was ongoing on the last day of progestogen intake and the following day, this episode was regarded as the withdrawal bleeding episode, as long as it had started not more than 4 days before the progestogen withdrawal.

Intracyclic bleeding episodes were any bleeding episodes not qualifying as withdrawal bleeding. The latter was defined as the first bleeding episode after complete or partial progestogen withdrawal (i.e. the first episode starting after the last day of progestogen intake). If a bleeding episode was ongoing on the last day of progestogen intake and the following day, this episode was regarded as the withdrawal bleeding episode, as long as it had started not more than 4 days before the progestogen withdrawal. The total number of days during intracyclic bleeding episodes was counted.

Intracyclic bleeding episodes were any bleeding episodes not qualifying as withdrawal bleeding. The latter was defined as the first bleeding episode after complete or partial progestogen withdrawal (i.e. the first episode starting after the last day of progestogen intake). If a bleeding episode was ongoing on the last day of progestogen intake and the following day, this episode was regarded as the withdrawal bleeding episode, as long as it had started not more than 4 days before the progestogen withdrawal. The total number of days during intracyclic bleeding episodes was counted.

Intracyclic bleeding episodes were any bleeding episodes not qualifying as withdrawal bleeding. The latter was defined as the first bleeding episode after complete or partial progestogen withdrawal (i.e. the first episode starting after the last day of progestogen intake). If a bleeding episode was ongoing on the last day of progestogen intake and the following day, this episode was regarded as the withdrawal bleeding episode, as long as it had started not more than 4 days before the progestogen withdrawal. Intensity could be described as spotting, light, normal or heavy.

Intracyclic bleeding episodes were any bleeding episodes not qualifying as withdrawal bleeding. The latter was defined as the first bleeding episode after complete or partial progestogen withdrawal (i.e. the first episode starting after the last day of progestogen intake). If a bleeding episode was ongoing on the last day of progestogen intake and the following day, this episode was regarded as the withdrawal bleeding episode, as long as it had started not more than 4 days before the progestogen withdrawal. Intensity could be described as spotting, light, normal or heavy.

The investigator was asked to interview the participant and record the number of missed hours/days from work due to dysmenorrheic pain in the previous menstrual cycle.

The investigator was asked to interview the participant and record the number of missed hours/days from work due to dysmenorrheic pain in the previous menstrual cycle.

The investigator was asked to interview the participant and record the number of missed hours/days from work due to dysmenorrheic pain in the previous menstrual cycle.

The investigator was asked to interview the participant and record the number of missed hours/days from work due to dysmenorrheic pain in the previous menstrual cycle.

The participants were asked to complete a resource use questionnaire indicating their own costs of physiotherapy per treatment of dysmenorrheic pain. Costs were converted to U.S. dollars.

The participants were asked to complete a resource use questionnaire indicating their own costs of pain medication per treatment of dysmenorrheic pain. Costs were converted to U.S. dollars.

The participants were asked to complete a resource use questionnaire indicating their own costs of vitamins per treatment of dysmenorrheic pain. Costs were converted to U.S. dollars.

The participants were asked to complete a resource use questionnaire indicating their own costs of massages per treatment of dysmenorrheic pain. Costs were converted to U.S. dollars.

The participants were asked to complete a resource use questionnaire indicating their own costs of acupuncture per treatment of dysmenorrheic pain. Costs were converted to U.S. dollars.

The participants were asked to complete a resource use questionnaire indicating their own costs of medical counseling per treatment of dysmenorrheic pain. Costs were converted to U.S. dollars.

The participants were asked to complete a resource use questionnaire indicating their own costs of alternative medicine per treatment of dysmenorrheic pain. Costs were converted to U.S. dollars.

The participants were asked to complete a resource use questionnaire indicating their own costs of herbs/teas per treatment of dysmenorrheic pain. Costs were converted to U.S. dollars.

The participants were asked to complete a resource use questionnaire indicating their other own costs per treatment of dysmenorrheic pain. Costs were converted to U.S. dollars.

The Clinical Global Impression Scale (CGI) is a widely used rating scale/assessment instrument in psychopharmacology research in general, and in studies on women's health in particular. Investigators were asked to rate the participants' improvement during the course of the study.

The Clinical Global Impression Scale (CGI) is a widely used rating scale/assessment instrument in psychopharmacology research in general, and in studies on women's health in particular. Participants were asked to rate their improvement during the course of the study.

The standard questionnaire SF-36v1, a general health status measure used to evaluate patient populations and to compare health status across different populations, was completed by participants as a self-administered native language version. Percentages of absolute scores were calculated such that 0 represents the lowest possible score (worst outcome) and 100 the highest possible score (best outcome)

The standard questionnaire SF-36v1, a general health status measure used to evaluate patient populations and to compare health status across different populations, was completed by participants as a self-administered native language version. Percentages of absolute scores were calculated such that 0 represents the lowest possible score (worst outcome) and 100 the highest possible score (best outcome)

The standard questionnaire SF-36v1, a general health status measure used to evaluate patient populations and to compare health status across different populations, was completed by participants as a self-administered native language version. Percentages of absolute scores were calculated such that 0 represents the lowest possible score (worst outcome) and 100 the highest possible score (best outcome)

The standard questionnaire SF-36v1, a general health status measure used to evaluate patient populations and to compare health status across different populations, was completed by participants as a self-administered native language version. Percentages of absolute scores were calculated such that 0 represents the lowest possible score (worst outcome) and 100 the highest possible score (best outcome)

The standard questionnaire SF-36v1, a general health status measure used to evaluate patient populations and to compare health status across different populations, was completed by participants as a self-administered native language version. Percentages of absolute scores were calculated such that 0 represents the lowest possible score (worst outcome) and 100 the highest possible score (best outcome)

The standard questionnaire SF-36v1, a general health status measure used to evaluate patient populations and to compare health status across different populations, was completed by participants as a self-administered native language version. Percentages of absolute scores were calculated such that 0 represents the lowest possible score (worst outcome) and 100 the highest possible score (best outcome)

The standard questionnaire SF-36v1, a general health status measure used to evaluate patient populations and to compare health status across different populations, was completed by participants as a self-administered native language version. Percentages of absolute scores were calculated such that 0 represents the lowest possible score (worst outcome) and 100 the highest possible score (best outcome)

The standard questionnaire SF-36v1, a general health status measure used to evaluate patient populations and to compare health status across different populations, was completed by participants as a self-administered native language version. Percentages of absolute scores were calculated such that 0 represents the lowest possible score (worst outcome) and 100 the highest possible score (best outcome)

The standard questionnaire SF-36v1, a general health status measure used to evaluate patient populations and to compare health status across different populations, was completed by participants as a self-administered native language version. Percentages of absolute scores were calculated such that 0 represents the lowest possible score (worst outcome) and 100 the highest possible score (best outcome)

The standard questionnaire SF-36v1, a general health status measure used to evaluate patient populations and to compare health status across different populations, was completed by participants as a self-administered native language version. Percentages of absolute scores were calculated such that 0 represents the lowest possible score (worst outcome) and 100 the highest possible score (best outcome)

The standard questionnaire SF-36v1, a general health status measure used to evaluate patient populations and to compare health status across different populations, was completed by participants as a self-administered native language version. Percentages of absolute scores were calculated such that 0 represents the lowest possible score (worst outcome) and 100 the highest possible score (best outcome)

The standard questionnaire SF-36v1, a general health status measure used to evaluate patient populations and to compare health status across different populations, was completed by participants as a self-administered native language version. Percentages of absolute scores were calculated such that 0 represents the lowest possible score (worst outcome) and 100 the highest possible score (best outcome)

The standard questionnaire SF-36v1, a general health status measure used to evaluate patient populations and to compare health status across different populations, was completed by participants as a self-administered native language version. Percentages of absolute scores were calculated such that 0 represents the lowest possible score (worst outcome) and 100 the highest possible score (best outcome)

The standard questionnaire SF-36v1, a general health status measure used to evaluate patient populations and to compare health status across different populations, was completed by participants as a self-administered native language version. Percentages of absolute scores were calculated such that 0 represents the lowest possible score (worst outcome) and 100 the highest possible score (best outcome)

The standard questionnaire SF-36v1, a general health status measure used to evaluate patient populations and to compare health status across different populations, was completed by participants as a self-administered native language version. Percentages of absolute scores were calculated such that 0 represents the lowest possible score (worst outcome) and 100 the highest possible score (best outcome)

The standard questionnaire SF-36v1, a general health status measure used to evaluate patient populations and to compare health status across different populations, was completed by participants as a self-administered native language version. Percentages of absolute scores were calculated such that 0 represents the lowest possible score (worst outcome) and 100 the highest possible score (best outcome)