The PANSS Negative Subscale assesses seven negative-symptoms of schizophrenia. Negative symptoms represent a diminution or loss of normal functions. The symptoms are rated on a 7-point scale, with a range of 7 (absent) to 49 (extreme psychopathology).

The PANSS General Psychopathology Subscale Score assesses 16 general psychopathology symptoms. The symptoms are rated on a 7-point scale, with a range of 16 (absent) to 112 (extreme psychopathology).

The PANSS is a 30-item scale designed to assess various symptoms of schizophrenia (psychiatric disorder with symptoms of emotional instability, detachment from reality, often with delusions and hallucinations, and withdrawal into the self) including delusions, grandiosity, blunted affect, poor attention, and poor impulse control. The 30 symptoms are rated on a 7-point scale that ranges from 1 (absent) to 7 (extreme psychopathology). The PANSS total score consists of the sum of all 30 PANSS items and ranges from 30 to 210, higher scores indicate worsening.

The SWN 20 scale is a 20 item scale that was originally designed to explore the subjective experience of psychotic participants. The SWN scale contains five sub-scales consisting of four items each: mental functioning (MF), self control (SC), emotional regulation (ER), and social integration (SI), physical functioning (PF). The total score ranges from a minimum of 20 (poor subjective experience) to a maximum of 120 (excellent subjective experience). SWN scores appear to correlate with measure of objective psychopathology, quality of life and other self-ratings of mood.

The DAI is a 30-item self-rating inventory that focuses on subjective effects of neuroleptic medications in participants with schizophrenia. There are 15 items that are scored as true and 15 scored as false if the person is fully compliant (positive subjective response). Positive answers score as +1, negative answers score as - 1. Questionnaire allows identifying participants at high risk of low compliance. The total score may vary from -30 to +30 with a high total final score is a positive subjective response (compliant) and a low total score is a negative subjective response (non-compliant).

The CGI-S rating scale is a 7 point global assessment that measures the clinician's impression of the severity of illness exhibited by a participant. A rating of 1 is equivalent to normal, not at all ill and a rating of 7 is equivalent to among the most extremely ill participants. Higher scores indicate worsening.

The PSP is 100-point validated clinician-rated scale that assesses degree of difficulty in 4 areas of functioning: socially useful activities, personal and social relationships, self-care, disturbing and aggressive behaviors rated on 6-point scale (1=absent to 6=very severe).Total transformed score from 1 to 100 is generated from raw score based on clinical interpretation of scores generated in 4 areas of functioning, with higher transformed score indicating better function. Total score is divided into 3 levels: 71-100 (mild difficulty); 31-70 (marked difficulty) and 1-30 (severe difficulty).

This self-administered scale rates quality of sleep and daytime drowsiness. Participants indicate on an 11-point scale how well they have slept in the previous 7 days, from 0 (very badly) to 10 (very well); and how often they have felt drowsy within the previous 7 days, from 0 (not at all) to 10 (all the time). On the sleep evaluation scale, score 0 corresponds to very badly and score 10 to very well.

This self-administered scale rates quality of sleep and daytime drowsiness. Participants will indicate on an 11-point scale how well they have slept in the previous 7 days, from 0 (very badly) to 10 (very well); and how often they have felt drowsy within the previous 7 days, from 0 (not at all) to 10 (all the time).On the daytime drowsiness scale, score 0 corresponds to not at all and score 10 to all the time.

Extra pyramidal symptoms attributed to antipsychotic assessed by ESRS scale. Included 4 subscales; Parkinsonism (Park),dystonia(Dyst),dyskinesia(Dysk),akathisia(Akat),12 items on 4-point scale; (0=absent-3=severe); Park (8 items); Dyst (2 items); Dysk (7 items) all 3 rated on 7-point scale (0=none/normal-6=worst). Additionally, subtotals were calculated; hyperkinesia (item 5, 6 of Park); hypokinesia (item 1-4, 7 of Park); bucco-linguo-masticatory (item 1-3 of Dysk), choreoathetoid movement (item 5, 6 of Dysk). Total score: sum of Park, Dyst & Dysk subscale, ranged from 0 (normal)-102 (severe).

Out of a total of 133 participants, Baseline characteristic (Gender) was available for only 132 participants who were included in ITT population.

Participants were administered paliperidone extended release (ER) tablets orally (taken by mouth; to be swallowed) once daily in the dose range of 3 to 12 milligram (mg) for 13 weeks. Dose was increased or decreased as per Investigator's discretion.

The PANSS Positive Subscale assesses seven positive-symptoms of schizophrenia. Positive symptoms refer to an excess or distortion of normal functions. The symptoms are rated on a 7-point scale, with a range of 7 (absent) to 49 (extreme psychopathology).

The ITT included all participants who received at least one dose of study medication. For participants leaving study prematurely last available data post-baseline was used for final evaluation using LOCF method.

The PANSS Negative Subscale assesses seven negative-symptoms of schizophrenia. Negative symptoms represent a diminution or loss of normal functions. The symptoms are rated on a 7-point scale, with a range of 7 (absent) to 49 (extreme psychopathology).

The ITT included all participants who received at least one dose of study medication. For participants leaving study prematurely last available data post-baseline was used for final evaluation using LOCF method.

The PANSS General Psychopathology Subscale Score assesses 16 general psychopathology symptoms. The symptoms are rated on a 7-point scale, with a range of 16 (absent) to 112 (extreme psychopathology).

The ITT included all participants who received at least one dose of study medication. For participants leaving study prematurely last available data post-baseline was used for final evaluation using LOCF method.

The PANSS is a 30-item scale designed to assess various symptoms of schizophrenia (psychiatric disorder with symptoms of emotional instability, detachment from reality, often with delusions and hallucinations, and withdrawal into the self) including delusions, grandiosity, blunted affect, poor attention, and poor impulse control. The 30 symptoms are rated on a 7-point scale that ranges from 1 (absent) to 7 (extreme psychopathology). The PANSS total score consists of the sum of all 30 PANSS items and ranges from 30 to 210, higher scores indicate worsening.

The ITT included all participants who received at least one dose of study medication. For participants leaving study prematurely last available data post-baseline was used for final evaluation using LOCF method. 'N' (number of participants analyzed) signified participants evaluable for this measure.

The SWN 20 scale is a 20 item scale that was originally designed to explore the subjective experience of psychotic participants. The SWN scale contains five sub-scales consisting of four items each: mental functioning (MF), self control (SC), emotional regulation (ER), and social integration (SI), physical functioning (PF). The total score ranges from a minimum of 20 (poor subjective experience) to a maximum of 120 (excellent subjective experience). SWN scores appear to correlate with measure of objective psychopathology, quality of life and other self-ratings of mood.

The ITT included all participants who received at least one dose of study medication. For participants leaving study prematurely last available data post-baseline was used for final evaluation using LOCF method.

The DAI is a 30-item self-rating inventory that focuses on subjective effects of neuroleptic medications in participants with schizophrenia. There are 15 items that are scored as true and 15 scored as false if the person is fully compliant (positive subjective response). Positive answers score as +1, negative answers score as - 1. Questionnaire allows identifying participants at high risk of low compliance. The total score may vary from -30 to +30 with a high total final score is a positive subjective response (compliant) and a low total score is a negative subjective response (non-compliant).

The ITT included all participants who received at least one dose of study medication. For participants leaving study prematurely last available data post-baseline was used for final evaluation using LOCF method.

The CGI-S rating scale is a 7 point global assessment that measures the clinician's impression of the severity of illness exhibited by a participant. A rating of 1 is equivalent to normal, not at all ill and a rating of 7 is equivalent to among the most extremely ill participants. Higher scores indicate worsening.

The ITT included all participants who received at least one dose of study medication. For participants leaving study prematurely last available data post Baseline was used for final evaluation using LOCF method.

The PSP is 100-point validated clinician-rated scale that assesses degree of difficulty in 4 areas of functioning: socially useful activities, personal and social relationships, self-care, disturbing and aggressive behaviors rated on 6-point scale (1=absent to 6=very severe).Total transformed score from 1 to 100 is generated from raw score based on clinical interpretation of scores generated in 4 areas of functioning, with higher transformed score indicating better function. Total score is divided into 3 levels: 71-100 (mild difficulty); 31-70 (marked difficulty) and 1-30 (severe difficulty).

The ITT included all participants who received at least one dose of study medication. For participants leaving study prematurely last available data post Baseline was used for final evaluation using LOCF method.

This self-administered scale rates quality of sleep and daytime drowsiness. Participants indicate on an 11-point scale how well they have slept in the previous 7 days, from 0 (very badly) to 10 (very well); and how often they have felt drowsy within the previous 7 days, from 0 (not at all) to 10 (all the time). On the sleep evaluation scale, score 0 corresponds to very badly and score 10 to very well.

The ITT included all participants who received at least one dose of study medication. For participants leaving study prematurely last available data post-baseline was used for final evaluation using LOCF method.

This self-administered scale rates quality of sleep and daytime drowsiness. Participants will indicate on an 11-point scale how well they have slept in the previous 7 days, from 0 (very badly) to 10 (very well); and how often they have felt drowsy within the previous 7 days, from 0 (not at all) to 10 (all the time).On the daytime drowsiness scale, score 0 corresponds to not at all and score 10 to all the time.

ITT included all participants who received at least one dose of study medication. For participants leaving study prematurely last available data post-baseline was used for final evaluation using LOCF method.

Extra pyramidal symptoms attributed to antipsychotic assessed by ESRS scale. Included 4 subscales; Parkinsonism (Park),dystonia(Dyst),dyskinesia(Dysk),akathisia(Akat),12 items on 4-point scale; (0=absent-3=severe); Park (8 items); Dyst (2 items); Dysk (7 items) all 3 rated on 7-point scale (0=none/normal-6=worst). Additionally, subtotals were calculated; hyperkinesia (item 5, 6 of Park); hypokinesia (item 1-4, 7 of Park); bucco-linguo-masticatory (item 1-3 of Dysk), choreoathetoid movement (item 5, 6 of Dysk). Total score: sum of Park, Dyst & Dysk subscale, ranged from 0 (normal)-102 (severe).

Safety population included all participants who received atleast one dose of study medication.