To Estimate the Efficacy of Treatment With TNFi as Monotherapy or Combination Therapy With MTX and Compare and Contrast Efficacy With Tofacitinib as Monotherapy and Combination Therapy in a Real World Setting.

CDAI was a simplified index for assessing the disease activity comprising of the swollen joint counts (SJC), tender/painful joint counts (TJC), participant's global assessment of disease activity (PtGA) and physician's global assessment of disease activity (PGA). CDAI is the numerical sum of 4 outcome parameters: SJC and TJC (based on 28-joint assessment range from 0 to 28, higher scores indicated worse condition), PtGA and PGA (score range from 0 to 10, assessed on 0-10 centimeter (cm) visual analog scale (VAS); higher scores indicated greater affection due to disease activity). CDAI total score = 0 (no disease) to 76 (severe disease), higher scores indicated worse condition. In this outcome measure, CDAI for all and non-switchers participants was reported.

CDAI was a simplified index for assessing the disease activity comprising of the swollen joint counts (SJC), tender/painful joint counts (TJC), participant's global assessment of disease activity (PtGA) and physician's global assessment of disease activity (PGA). CDAI is the numerical sum of 4 outcome parameters: SJC and TJC (based on 28-joint assessment range from 0 to 28, higher scores indicated worse condition), PtGA and PGA (score range from 0 to 10, assessed on 0-10 centimeter (cm) visual analog scale (VAS); higher scores indicated greater affection due to disease activity). CDAI total score = 0 (no disease) to 76 (severe disease), higher scores indicated worse condition. In this outcome measure, CDAI for all and non-switchers participants was reported.

CDAI was a simplified index for assessing the disease activity comprising of the swollen joint counts (SJC), tender/painful joint counts (TJC), participant's global assessment of disease activity (PtGA) and physician's global assessment of disease activity (PGA). CDAI is the numerical sum of 4 outcome parameters: SJC and TJC (based on 28-joint assessment range from 0 to 28, higher scores indicated worse condition), PtGA and PGA (score range from 0 to 10, assessed on 0-10 centimeter (cm) visual analog scale (VAS); higher scores indicated greater affection due to disease activity). CDAI total score = 0 (no disease) to 76 (severe disease), higher scores indicated worse condition. In this outcome measure, CDAI for all and non-switchers participants was reported.

CDAI was a simplified index for assessing the disease activity comprising of the swollen joint counts (SJC), tender/painful joint counts (TJC), participant's global assessment of disease activity (PtGA) and physician's global assessment of disease activity (PGA). CDAI is the numerical sum of 4 outcome parameters: SJC and TJC (based on 28-joint assessment range from 0 to 28, higher scores indicated worse condition), PtGA and PGA (score range from 0 to 10, assessed on 0-10 centimeter (cm) visual analog scale (VAS); higher scores indicated greater affection due to disease activity). CDAI total score = 0 (no disease) to 76 (severe disease), higher scores indicated worse condition. In this outcome measure, CDAI for all and non-switchers participants was reported.

CDAI was a simplified index for assessing the disease activity comprising of the swollen joint counts (SJC), tender/painful joint counts (TJC), participant's global assessment of disease activity (PtGA) and physician's global assessment of disease activity (PGA). CDAI is the numerical sum of 4 outcome parameters: SJC and TJC (based on 28-joint assessment range from 0 to 28, higher scores indicated worse condition), PtGA and PGA (score range from 0 to 10, assessed on 0-10 centimeter (cm) visual analog scale (VAS); higher scores indicated greater affection due to disease activity). CDAI total score = 0 (no disease) to 76 (severe disease), higher scores indicated worse condition. In this outcome measure, CDAI for all and non-switchers participants was reported.

CDAI was a simplified index for assessing the disease activity comprising of the swollen joint counts (SJC), tender/painful joint counts (TJC), participant's global assessment of disease activity (PtGA) and physician's global assessment of disease activity (PGA). CDAI is the numerical sum of 4 outcome parameters: SJC and TJC (based on 28-joint assessment range from 0 to 28, higher scores indicated worse condition), PtGA and PGA (score range from 0 to 10, assessed on 0-10 centimeter (cm) visual analog scale (VAS); higher scores indicated greater affection due to disease activity). CDAI total score = 0 (no disease) to 76 (severe disease), higher scores indicated worse condition. In this outcome measure, CDAI for all and non-switchers participants was reported.

mACR20 response: >= 20 percent (%) improvement in tender and swollen joint count and 20% improvement in 2 of the following 4 criteria: 1) participant assessment of pain (scored from 0 to 100, higher scores indicated worsened pain) ; 2) participant global assessment of disease activity (scored from 0 to 100, higher scores indicated worsened condition); 3) physician global assessment of disease activity (scored from 0 to 100, higher scores indicated worsened condition); 4) self-assessed disability index of the mHAQ (scored from 0 to 3, higher scores indicated worsened function).

mACR20 response: >= 20 percent (%) improvement in tender and swollen joint count and 20% improvement in 2 of the following 4 criteria: 1) participant assessment of pain (scored from 0 to 100, higher scores indicated worsened pain) ; 2) participant global assessment of disease activity (scored from 0 to 100, higher scores indicated worsened condition); 3) physician global assessment of disease activity (scored from 0 to 100, higher scores indicated worsened condition); 4) self-assessed disability index of the mHAQ (scored from 0 to 3, higher scores indicated worsened function).

mACR20 response: >= 20 percent (%) improvement in tender and swollen joint count and 20% improvement in 2 of the following 4 criteria: 1) participant assessment of pain (scored from 0 to 100, higher scores indicated worsened pain) ; 2) participant global assessment of disease activity (scored from 0 to 100, higher scores indicated worsened condition); 3) physician global assessment of disease activity (scored from 0 to 100, higher scores indicated worsened condition); 4) self-assessed disability index of the mHAQ (scored from 0 to 3, higher scores indicated worsened function).

mACR20 response: >= 20 percent (%) improvement in tender and swollen joint count and 20% improvement in 2 of the following 4 criteria: 1) participant assessment of pain (scored from 0 to 100, higher scores indicated worsened pain) ; 2) participant global assessment of disease activity (scored from 0 to 100, higher scores indicated worsened condition); 3) physician global assessment of disease activity (scored from 0 to 100, higher scores indicated worsened condition); 4) self-assessed disability index of the mHAQ (scored from 0 to 3, higher scores indicated worsened function).

mACR20 response: >= 20 percent (%) improvement in tender and swollen joint count and 20% improvement in 2 of the following 4 criteria: 1) participant assessment of pain (scored from 0 to 100, higher scores indicated worsened pain) ; 2) participant global assessment of disease activity (scored from 0 to 100, higher scores indicated worsened condition); 3) physician global assessment of disease activity (scored from 0 to 100, higher scores indicated worsened condition); 4) self-assessed disability index of the mHAQ (scored from 0 to 3, higher scores indicated worsened function).

mACR20 response: >= 20 percent (%) improvement in tender and swollen joint count and 20% improvement in 2 of the following 4 criteria: 1) participant assessment of pain (scored from 0 to 100, higher scores indicated worsened pain) ; 2) participant global assessment of disease activity (scored from 0 to 100, higher scores indicated worsened condition); 3) physician global assessment of disease activity (scored from 0 to 100, higher scores indicated worsened condition); 4) self-assessed disability index of the mHAQ (scored from 0 to 3, higher scores indicated worsened function).

Line of therapy: 1st line: no prior use of any Disease-modifying anti-rheumatic drug (DMARD) at time of initiation. 2nd line: prior use of at least one convention DMARD (cDMARD) and no prior use of any biologic. 3rd line: prior use of at least one cDMARD and prior use of 1 biologic. 4th line: prior use of at last one cDMARD and prior use of 2 or more biologics. Number of 1st line, 2nd line, 3rd line, and 4th line of therapy was reported in this outcome measure.

Line of therapy: 1st line: no prior use of any DMARD at time of initiation. 2nd line: prior use of at least one convention cDMARD and no prior use of any biologic. 3rd line: prior use of at least one cDMARD and prior use of 1 biologic. 4th line: prior use of at last one cDMARD and prior use of 2 or more biologics. Number of participants according to line of therapy at TNFi initiation after 11/6/2012 was reported in this outcome measure.

Line of therapy: 1st line: no prior use of any DMARD at time of initiation. 2nd line: prior use of at least one convention cDMARD and no prior use of any biologic. 3rd line: prior use of at least one cDMARD and prior use of 1 biologic. 4th line: prior use of at last one cDMARD and prior use of 2 or more biologics. Number of participants according to line of therapy at tofacitinib initiation was reported in this outcome measure.

CDAI was a simplified index for assessing the disease activity comprising of the swollen joint counts (SJC), tender/painful joint counts (TJC), participant's global assessment of disease activity (PtGA) and physician's global assessment of disease activity (PGA). CDAI is the numerical sum of 4 outcome parameters: SJC and TJC (based on 28-joint assessment range from 0 to 28, higher scores indicated worse condition), PtGA and PGA (score range from 0 to 10, assessed on 0-10 centimeter (cm) visual analog scale (VAS); higher scores indicated greater affection due to disease activity). CDAI total score = 0 (no disease) to 76 (severe disease), higher scores indicated worse condition. Baseline was defined as the time of initiation of TNFi Initiator.

CDAI was a simplified index for assessing the disease activity comprising of the swollen joint counts (SJC), tender/painful joint counts (TJC), participant's global assessment of disease activity (PtGA) and physician's global assessment of disease activity (PGA). CDAI is the numerical sum of 4 outcome parameters: SJC and TJC (based on 28-joint assessment range from 0 to 28, higher scores indicated worse condition), PtGA and PGA (score range from 0 to 10, assessed on 0-10 centimeter (cm) visual analog scale (VAS); higher scores indicated greater affection due to disease activity). CDAI total score = 0 (no disease) to 76 (severe disease), higher scores indicated worse condition. Baseline was defined as the time of initiation of Tofacitinib Initiator.

CDAI was a simplified index for assessing the disease activity comprising of the swollen joint counts (SJC), tender/painful joint counts (TJC), participant's global assessment of disease activity (PtGA) and physician's global assessment of disease activity (PGA). CDAI is the numerical sum of 4 outcome parameters: SJC and TJC (based on 28-joint assessment range from 0 to 28, higher scores indicated worse condition), PtGA and PGA (score range from 0 to 10, assessed on 0-10 centimeter (cm) visual analog scale (VAS); higher scores indicated greater affection due to disease activity). CDAI total score = 0 (no disease) to 76 (severe disease), higher scores indicated worse condition. Baseline was defined as the time of initiation of TNFi initiator after 11-6-2012.

Number of participants according to prior biologic for line of therapy of prior biologics (restricted to 3+ line of therapy: prior use of at least one biologic) use at TNFi initiation was reported in this outcome measure. Line of therapy: 1st line: no prior use of any Disease-modifying anti-rheumatic drug (DMARD) at time of initiation. 2nd line: prior use of at least one convention DMARD (cDMARD) and no prior use of any biologic. 3rd line: prior use of at least one cDMARD and prior use of 1 biologic. 4th line: prior use of at last one cDMARD and prior use of 2 or more biologics.

Number of participants according to prior biologic for line of therapy of prior biologics (restricted to 3+ line of therapy (LOT): prior use of at least one biologic) use at TNFi initiation after 11/6/2012 was reported in this outcome measure.

Number of participants according to prior biologic for line of therapy of prior biologics (restricted to 3+ line of therapy: prior use of at least one biologic) use at tofacitinib initiation was reported in this outcome measure.